**Links:**| Recent Manuscripts | Journal Papers | Conference Papers | Technical Reports & Theses | Copyright Notice |

## RECENT MANUSCRIPTS

**[B1]**W.U. Bajwa and A. Pezeshki, “Finite frames for sparse signal processing,” in

*Finite Frames*, P. Casazza and G. Kutyniok, Eds. Cambridge, MA: Birkhäuser Boston, 2012, Ch. 10, pp. 303-335.

**[J20]**W.U. Bajwa and D. Mixon, “A multiple hypothesis testing approach to low-complexity subspace unmixing,”

*in review for journal publication*, Aug. 2014.

**[J19]**H. Raja and W.U. Bajwa, “Cloud K-SVD: A collaborative dictionary learning algorithm for big, distributed data,”

*in review for journal publication*, Dec. 2014.

**[J18]**T. Wu and W.U. Bajwa, “Learning the nonlinear geometry of high-dimensional data: Models and algorithms,”

*in review for journal publication*, Dec. 2014.

**[J17]**S. Sun, W.U. Bajwa, and A.P. Petropulu, “MIMO-MC radar: A MIMO radar approach based on matrix completion,” accepted for publication in

*IEEE Trans. Aerosp. Electron. Syst.*, 2015.

**[J16]**W.U. Bajwa, M.F. Duarte, and R. Calderbank, “Conditioning of random block subdictionaries with applications to block-sparse recovery and regression,” accepted for publication in

*IEEE Trans. Information Theory*, 2015.

**[J15]**S. Parlak, I. Marsic, A. Sarcevic, W.U. Bajwa, L. Waterhouse, and R. Burd, “Passive RFID for object and use detection during trauma resuscitation,” accepted for publication in

*IEEE Trans. Mobile Computing*, 2015.

**[J14]**A. Harms, W.U. Bajwa, and R. Calderbank, “Identification of linear time-varying systems through waveform diversity,”

*IEEE Trans. Signal Processing*, vol. 63, no. 8, pp. 2070-2084, Apr. 2015.

**[C55]**H. Raja and W.U. Bajwa, “A convergence analysis of distributed dictionary learning based on the K-SVD algorithm,” to appear in

*Proc. IEEE Intl. Symp. Information Theory (ISIT'15)*, Hong Kong, Jun. 14-19, 2015.

**[C54]**T. Wu and W.U. Bajwa, “Metric-constrained kernel union of subspaces,” in

*Proc. IEEE Intl. Conf. Acoustics, Speech, and Signal Processing (ICASSP'15)*, Brisbane, Australia, Apr. 19-24, 2015.

**[C53]**Z. Shakeri and W.U. Bajwa, “Deterministic selection of pilot tones for compressive estimation of MIMO-OFDM channels,” in

*Proc. 48th Annu. Conf. Information Sciences and Systems (CISS'15)*, Baltimore, MD, Mar. 18-20, 2015, pp. 1-6.

**[C52]**T. Wu, A. Sarwate, and W.U. Bajwa, “Active dictionary learning for image representation,” in

*Proc. SPIE Unmanned Systems Technology XVII*, Baltimore, MD, Apr. 21-23, 2015.

**[C51]**M. Mokhtar, W.U. Bajwa, and N. Al-Dhahir, “Sparsity-aware joint narrowband interference and impulse noise mitigation for hybrid powerline-wireless transmission,” in

*Proc. IEEE Wireless Communications and Networking Conf. (WCNC'15)*, New Orleans, LA, Mar. 9-12, 2015.

**[C50]**Z. Shakeri, H. Raja, and W.U. Bajwa, “Dictionary learning based nonlinear classifier training from distributed data,” in

*Proc. 2nd IEEE Global Conf. Signal and Information Processing (GlobalSIP'14)*, Symposium on Network Theory, Atlanta, GA, Dec. 3-5, 2014, pp. 759-763.

**[C49]**T. Ahmed and W.U. Bajwa, “Geometric manifold approximation using union of tangent patches,” in

*Proc. 2nd IEEE Global Conf. Signal and Information Processing (GlobalSIP'14)*, Symposium on Information Processing for Big Data, Atlanta, GA, Dec. 3-5, 2014, pp. 458-462.

**[C48]**A. Harms, W.U. Bajwa, and R. Calderbank, “Efficient linear time-varying system identification using chirp waveforms,” in

*Proc. 48th Asilomar Conf. Signals, Systems, and Computers*, Pacific Grove, CA, Nov. 2–5, 2014, pp. 854-858.

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## JOURNAL PAPERS

**[J13]**A. Armagan, D.B. Dunson, J. Lee, W.U. Bajwa, and N. Strawn, “Posterior consistency in linear models under shrinkage priors,”

*Biometrika*, vol. 100, no. 4, pp. 1011-1018, Dec. 2013.

**[J12]**K. Krishnamurthy, W.U. Bajwa, and R. Willett, “Level set estimation from projection measurements: Performance guarantees and fast computation,”

*SIAM J. Imaging Sciences*, vol. 6, no. 4, pp. 2047-2074, Oct. 2013.

**[J11]**M. Nokleby, W.U. Bajwa, R. Calderbank, and B. Aazhang, “Toward resource-optimal consensus over the wireless medium,”

*IEEE J. Select. Topics Signal Processing*, vol. 7, no. 2, pp. 284-295, Apr. 2013.

**[J10]**A. Harms, W.U. Bajwa, and R. Calderbank, “A constrained random demodulator for sub-Nyquist sampling,”

*IEEE Trans. Signal Processing*, vol. 61, no. 3, pp. 707-723, Feb. 2013.

**[J9]**W.U. Bajwa, R. Calderbank, and D.G. Mixon, “Two are better than one: Fundamental parameters of frame coherence,”

*Appl. Comput. Harmon. Anal.*, vol. 33, no. 1, pp. 58-78, Jul. 2012.

**[J8]**L. Applebaum, W.U. Bajwa, M.F. Duarte, and R. Calderbank, “Asynchronous code-division random access using convex optimization,”

*Elsevier Phy. Commun.*, vol. 5, no. 2, pp. 129-147, Jun. 2012.

**[J7]**W.U. Bajwa, K. Gedalyahu, and Y.C. Eldar, “Identification of parametric underspread linear systems and super-resolution radar,”

*IEEE Trans. Signal Processing*, vol. 59, no. 6, pp. 2548-2561, Jun. 2011.

**[J6]**J. Haupt, W.U. Bajwa, G. Raz, and R. Nowak, “Toeplitz compressed sensing matrices with applications to sparse channel estimation,”

*IEEE Trans. Inform. Theory*, vol. 56, no. 11, pp. 5862-5875, Nov. 2010.

**[J5]**W.U. Bajwa, R. Calderbank, and S. Jafarpour, “Why Gabor frames? Two fundamental measures of coherence and their role in model selection,”

*J. Commun. Netw.*, vol. 12, no. 4, pp. 289-307, Aug. 2010.

**[J4]**W.U. Bajwa, J. Haupt, A.M. Sayeed, and R. Nowak, “Compressed channel sensing: A new approach to estimating sparse multipath channels,”

*Proc. of the IEEE*, vol. 98, no. 6, pp. 1058-1076, Jun. 2010.

**[J3]**J. Haupt, W.U. Bajwa, M. Rabbat, and R. Nowak, “Compressed sensing and network monitoring,”

*The Next Wave*, vol. 18, no. 3, pp. 16-25, 2010.

**[J2]**J. Haupt, W.U. Bajwa, M. Rabbat, and R. Nowak, “Compressed sensing for networked data,”

*IEEE Signal Processing Mag.*, vol. 25, no. 2, pp. 92-101, Mar. 2008.

**[J1]**W.U. Bajwa, J. Haupt, A.M. Sayeed, and R. Nowak, “Joint source–channel communication for distributed estimation in sensor networks,”

*IEEE Trans. Inform. Theory*, vol. 53, no. 10, pp. 3629-3653, Oct. 2007.

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## CONFERENCE PAPERS

**[C47]**M. Tavan, R.D. Yates, and W.U. Bajwa, “Information in tweets: Analysis of a bufferless timing channel model,” in

*Proc. IEEE Intl. Symp. Information Theory (ISIT'14)*, Honolulu, HI, Jun. 29-Jul. 4, 2014, pp. 826-830.

**[C46]**T. Ahmed and W.U. Bajwa, “A greedy, adaptive approach to learning geometry of nonlinear manifolds,” in

*Proc. IEEE Workshop Statistical Signal Processing (SSP'14)*, Gold Coast, Australia, Jun. 29-Jul. 2, 2014, pp. 133-136.

**[C45]**T. Wu and W.U. Bajwa, “Subspace detection in a kernel space: The missing data case,” in

*Proc. IEEE Workshop Statistical Signal Processing (SSP'14)*, Gold Coast, Australia, Jun. 29-Jul. 2, 2014, pp. 93-96.

**[C44]**T. Wu and W.U. Bajwa, “Revisiting robustness of the union-of-subspaces model for data-adaptive learning of nonlinear signal models,” in

*Proc. IEEE Intl. Conf. Acoustics, Speech, and Signal Processing (ICASSP'14)*, Florence, Italy, May 4-9, 2014, pp. 3390-3394.

**[C43]**W.U. Bajwa, M.F. Duarte, and R. Calderbank, “Average case analysis of high-dimensional block-sparse recovery and regression for arbitrary designs,” in

*Proc. 17th Intl. Conf. Artificial Intelligence and Statistics (AISTATS'14)*, Reykjavik, Iceland, Apr. 22–25, 2014, pp. 57-67 (

*).*

**Acceptance rate:**120/335**[C42]**M. Tavan, R.D. Yates, and W.U. Bajwa, “Capacity analysis of a discrete-time bufferless timing channel,” in

*Proc. 48th Annu. Conf. Information Sciences and Systems (CISS'14)*, Princeton, NJ, Mar. 19-21, 2014, pp. 1-6.

**[C41]**A. Harms, W.U. Bajwa, and R. Calderbank, “Resource-efficient parametric recovery of linear time-varying systems,” in

*Proc. 5th Intl. Workshop Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP'13)*, Saint Martin, Dec. 15-18, 2013, pp. 200-203.

**[C40]**A. Harms, W.U. Bajwa, and R. Calderbank, “Shaping the power spectra of bipolar sequences with application to sub-Nyquist sampling,” in

*Proc. 5th Intl. Workshop Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP'13)*, Saint Martin, Dec. 15-18, 2013, pp. 236-239.

**[C39]**M. Nokleby and W.U. Bajwa, “Resource tradeoffs in distributed subspace tracking over the wireless medium,” in

*Proc. 1st IEEE Global Conf. Signal and Information Processing (GlobalSIP'13)*, Symposium on Network Theory, Austin, TX, Dec. 2013, pp. 823-826.

**[C38]**H. Raja and W.U. Bajwa, “Cloud K-SVD: Computing data-adaptive representations in the cloud,” in

*Proc. 51st Annu. Allerton Conf. Communication, Control, and Computing*, Monticello, IL, Oct. 2-4, 2013, pp. pp. 1474-1481.

**[C37]**M. Tavan, R.D. Yates, and W.U. Bajwa, “Bits through bufferless queues,” in

*Proc. 51st Annu. Allerton Conf. Communication, Control, and Computing*, Monticello, IL, Oct. 2-4, 2013, pp. 755-762.

**[C36]**S. Sun, A.P. Petropulu, and W.U. Bajwa, “High-resolution networked MIMO radar based on sub-Nyquist observations,” in

*Proc. Workshop Signal Processing with Adaptive Sparse Structured Representations (SPARS'13)*, Lausanne, Switzerland, July 8-11, 2013.

**[C35]**S. Sun, A.P. Petropulu, and W.U. Bajwa, “Target estimation in colocated MIMO radar via matrix completion,” in

*Proc. IEEE Intl. Conf. Acoustics, Speech, and Signal Processing (ICASSP'13)*, Vancouver, Canada, May 26-31, 2013, pp. 4144-4148.

**[C34]**M. Nokleby, W.U. Bajwa, R. Calderbank, and B. Aazhang, “Toward resource-optimal averaging consensus over the wireless medium,” in

*Proc. 46th Asilomar Conf. Signals, Systems, and Computers*, Pacific Grove, CA, Nov. 4-7, 2012, pp. 1197-1201.

**[C33]**A. Harms, W.U. Bajwa, and R. Calderbank, “Rapid sensing of underutilized, wideband spectrum using the random demodulator,” in

*Proc. 46th Asilomar Conf. Signals, Systems, and Computers*, Pacific Grove, CA, Nov. 4-7, 2012, pp. 1940-1944.

**[C32]**W.U. Bajwa and D.G. Mixon, “Group model selection using marginal correlations: The good, the bad and the ugly,” in

*Proc. 50th Annu. Allerton Conf. Communication, Control, and Computing*, Monticello, IL, Oct. 1-5, 2012, pp. 494-501.

**[C31]**W.U. Bajwa, “Geometry of random Toeplitz-block sensing matrices: Bounds and implications for sparse signal processing,” in

*Proc. SPIE Defense, Security, and Sensing Conf. Compressive Sensing*, Baltimore, MD, Apr. 23-27, 2012, pp. 1-7.

**[C30]**M. Nokleby, W.U. Bajwa, R. Calderbank, and B. Aazhang, “Hierarchical averaging over wireless networks,” in

*Proc. IEEE Int. Conf. Acoustics, Speech, and Signal Processing (ICASSP'12)*, Kyoto, Japan, Mar. 25-30, 2012, pp. 3121-3124. [

**Erratum**].

**[C29]**A. Harms, W.U. Bajwa, and R. Calderbank, “Faster than Nyquist, slower than Tropp,” in

*Proc. 4th Intl. Workshop Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP'11)*, San Juan, Puerto Rico, Dec. 13-16, 2011, pp. 345-348.

**[C28]**M. Nokleby, W.U. Bajwa, R. Calderbank, and B. Aazhang, “Gossiping in groups: Distributed averaging over the wireless medium,” in

*Proc. 49th Annu. Allerton Conf. Communication, Control, and Computing*, Monticello, IL, Sep. 28-30, 2011, pp. 1242-1249.

**[C27]**L. Applebaum, W.U. Bajwa, R. Calderbank, and S. Howard, “Choir codes: Coding for full duplex interference management,” in

*Proc. 49th Annu. Allerton Conf. Communication, Control, and Computing*, Monticello, IL, Sep. 28-30, 2011, pp. 1-8.

**[C26]**D.G. Mixon, W.U. Bajwa, and R. Calderbank, “Frame coherence and sparse signal processing,” in

*Proc. IEEE Int. Symp. Information Theory (ISIT'11)*, Saint-Petersburg, Russia, Jul. 31-Aug. 5, 2011, pp. 663-667.

**[C25]**L. Applebaum, W.U. Bajwa, R. Calderbank, J. Haupt, and R. Nowak, “Deterministic pilot sequences for sparse channel estimation in OFDM systems,” in

*Proc. 17th Int. Conf. Digital Signal Processing (DSP'11)*, Corfu, Greece, Jul. 6-8, 2011.

**[C24]**K. Krishnamurthy, W.U. Bajwa, R. Willett, and R. Calderbank, “Fast level set estimation from projection measurements,” in

*Proc. IEEE Workshop Statistical Signal Processing (SSP'11)*, Nice, France, Jun. 28-30, 2011, pp. 585-588.

**[C23]**M.F. Duarte, W.U. Bajwa, and R. Calderbank, “Regression performance of group lasso for arbitrary design matrices,” in

*Proc. Int. Conf. Sampling Theory and Applications (SampTA'11)*, Singapore, May 2-6, 2011.

**[C22]**A. Harms, W.U. Bajwa, and R. Calderbank, “Beating Nyquist through correlations: A constrained random demodulator for sampling of sparse bandlimited signals,” in

*Proc. IEEE Int. Conf. Acoustics, Speech, and Signal Processing (ICASSP'11)*, Prague, Czech Republic, May 22-27, 2011, pp. 5968-5971.

**[C21]**W.U. Bajwa, K. Gedalyahu, and Y.C. Eldar, “On the identification of parametric underspread linear systems,” in

*Proc. IEEE Int. Conf. Acoustics, Speech, and Signal Processing (ICASSP'11)*, Prague, Czech Republic, May 22-27, 2011, pp. 4088-4091.

**[C20]**L. Balzano, R. Nowak, and W.U. Bajwa, “Column subset selection with missing data,” in

*Proc. NIPS Workshop on Low-rank Methods for Large-scale Machine Learning*, Whistler, Canada, Dec. 11, 2010.

**[C19]**W.U. Bajwa, R. Calderbank, and S. Jafarpour, “Revisiting model selection and recovery of sparse signals using one-step thresholding,” in

*Proc. 48th Annu. Allerton Conf. Communication, Control, and Computing*, Monticello, IL, Sep. 29-Oct. 01, 2010, pp. 977-984.

**[C18]**L. Applebaum, W.U. Bajwa, M.F. Duarte, and R. Calderbank, “Multiuser detection in asynchronous on–off random access channels using lasso,” in

*Proc. 48th Annu. Allerton Conf. Communication, Control, and Computing*, Monticello, IL, Sep. 29-Oct. 01, 2010, pp. 130-137.

**[C17]**W.U. Bajwa, R. Calderbank, and S. Jafarpour, “Model selection: Two fundamental measures of coherence and their algorithmic significance,” in

*Proc. IEEE Int. Symp. Information Theory (ISIT'10)*, Austin, TX, Jun. 13-18, 2010, pp. 1568-1572.

**[C16]**W.U. Bajwa, A.M. Sayeed, and R. Nowak, “A restricted isometry property for structurally-subsampled unitary matrices,” in

*Proc. 47th Annu. Allerton Conf. Communication, Control, and Computing*, Monticello, IL, Sep. 30-Oct. 02, 2009, pp. 1005-1012.

**[C15]**W.U. Bajwa, A.M. Sayeed, and R. Nowak, “Sparse multipath channels: Modeling and estimation,” in

*Proc. 13th IEEE Digital Signal Processing Workshop*, Marco Island, FL, Jan. 4-7, 2009, pp. 320-325.

**[C14]**W.U. Bajwa, A.M. Sayeed, and R. Nowak, “Compressed sensing of wireless channels in time, frequency, and space,” in

*Proc. 42nd Asilomar Conf. Signals, Systems, and Computers*, Pacific Grove, CA, Oct. 26-29, 2008, pp. 2048-2052. [

**Errata**].

**[C13]**W.U. Bajwa, A.M. Sayeed, and R. Nowak, “Learning sparse doubly-selective channels,” in

*Proc. 46th Annu. Allerton Conf. Communication, Control, and Computing*, Monticello, IL, Sep. 23-26, 2008, pp. 575-582. (

*UW-Madison Tech. Report ECE-08-02, Jun. 2008)*

**Extended Version:****[C12]**W.U. Bajwa, J. Haupt, G. Raz, and R. Nowak, “Compressed channel sensing,” in

*Proc. 42nd Annu. Conf. Information Sciences and Systems (CISS'08)*, Princeton, NJ, Mar. 19-21, 2008, pp. 5-10.

**[C11]**J.D. Wierer, W.U. Bajwa, N. Boston, and R. Nowak, “Characterizing decoding robustness under parametric channel uncertainty,” in

*Proc. 45th Annu. Allerton Conf. Communication, Control, and Computing*, Monticello, IL, Sep. 26-28, 2007, pp. 935-939.

**[C10]**W.U. Bajwa, J. Haupt, G. Raz, S.J. Wright, and R. Nowak, “Toeplitz-structured compressed sensing matrices,” in

*Proc. 14th IEEE/SP Workshop Statistical Signal Processing (SSP'07)*, Madison, WI, Aug. 26-29, 2007, pp. 294-298 (

*).*

**Acceptance rate:**185/262**[C9]**W.U. Bajwa, J. Haupt, A.M. Sayeed, and R. Nowak, “A universal matched source-channel communication scheme for wireless sensor ensembles,” in

*Proc. IEEE Int. Conf. Acoustics, Speech, and Signal Processing (ICASSP'06)*, Toulouse, France, May 14-19, 2006, vol. 5, pp. 1153-1156.

**[C8]**W.U. Bajwa, J. Haupt, A.M. Sayeed, and R. Nowak, “Compressive wireless sensing,” in

*Proc. 5th Int. Conf. Information Processing in Sensor Networks (IPSN'06)*, Nashville, TN, Apr. 19-21, 2006, pp. 134-142 (

*).*

**Acceptance rate:**41/165**[C7]**W.U. Bajwa, A.M. Sayeed, and R. Nowak, “Matched source-channel communication for field estimation in wireless sensor networks,” in

*Proc. 4th Int. Conf. Information Processing in Sensor Networks (IPSN'05)*, Los Angeles, CA, Apr. 25-27, 2005, pp. 332-339 (

*).*

**Acceptance rate:**44/213**[C6]**W.U. Bajwa, A.M. Sayeed, and R. Nowak, “Efficient communication strategies for distributed signal field estimation,” in

*Proc. 38th Asilomar Conf. Signals, Systems, and Computers*, Pacific Grove, CA, Nov. 7-10, 2004, pp. 1371-1375.

**[C5]**W.U. Bajwa, S.A. Ahmed, A. Abbas, S. Zulfiqar, and A. Qayyum, “Mobile IP based mobility management for 3G wireless networks,” in

*Proc. Int. Symp. Wireless Systems and Networks (ISWSN'03)*, Dhahran, Saudi Arabia, Mar. 24-26, 2003.

**[C4]**W.U. Bajwa, S.A. Ahmed, A. Abbas, and H.A. Qadeer, “A novel design of a generational garbage collector,” in

*Proc. IEEE Students Conf. (ISCON'02)*, Lahore, Pakistan, Aug. 16-17, 2002, vol. 1, pp. 85-88.

**[C3]**W.U. Bajwa, S.A. Ahmed, A. Abbas, and H.A. Qadeer, “Modeling of processor delay and overall reduction in network latencies for real time, interactive applications,” in

*Proc. IEEE Students Conf. (ISCON'02)*, Lahore, Pakistan, Aug. 16-17, 2002, vol. 1, pp. 76-79.

**[C2]**A. Abbas, A. Ahmed, S.A. Ahmed, W.U. Bajwa, A. Anwar, and S. Abbasi, “A retargetable tool-suite for the design of application specific instruction set processors using a machine description language,” in

*Proc. IEEE Int. Symp. Circuits and Systems (ISCAS'02)*, Scottsdale, AZ, May 26-29, 2002, vol. 1, pp. 425-428.

**[C1]**W.U. Bajwa, H.A. Qadeer, and M. Farooq, “Object-oriented design of a cycle accurate re-configurable simulator toolkit for DSP processors,” in

*Proc. IEEE Int. Multi-Topic Conf. (INMIC'01)*, Lahore, Pakistan, Dec. 28-30, 2001, pp. 10-15.

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## TECHNICAL REPORTS & THESES

**[T5]**M.F. Duarte, W.U. Bajwa, and R. Calderbank, “The performance of group lasso for linear regression of grouped variables,” Technical Report TR-2010-10, Department of Computer Science, Duke University, Durham, NC, Feb. 2011.

**[T4]**W.U. Bajwa, R. Calderbank, and M.F. Duarte, “On the conditioning of random block subdictionaries,” Technical Report TR-2010-06, Department of Computer Science, Duke University, Durham, NC, Sep. 2010.

**[T3]**W.U. Bajwa, “New information processing theory and methods for exploiting sparsity in wireless systems,” Ph.D. Dissertation, University of Wisconsin-Madison, Madison, WI, 2009.

**[T2]**W.U. Bajwa, A.M. Sayeed, and R. Nowak, “Learning sparse doubly-selective channels,” Technical Report ECE-08-02, University of Wisconsin-Madison, Madison, WI, Jun. 2008.

**[T1]**W.U. Bajwa, “Joint source–channel communication for distributed estimation in wireless sensor networks,” M.S. Thesis, University of Wisconsin-Madison, Madison, WI, 2005.

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## COPYRIGHT NOTICE

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