TY - GEN
T1 - Optimal sampling structure for asynchronous multi-access channels
AU - Li, Xiao
AU - Rueetschi, Andrea
AU - Scaglione, Anna
AU - Eldar, Yonina C.
PY - 2012/10/23
Y1 - 2012/10/23
N2 - A sensitive receiver operation in multi-access reception is to detect the presence of training signals and identify sources from which the signals are sent, with a certain physical delay and center frequency. This is typically a sequential search, where the receiver tests the presence of specific signals and then acquires synchronization parameters (delays, Dopplers), for each component. In this paper, we develop an optimal compressive multichannel sampling (CMS) architecture, the output samples of which are fed to the proposed Sparsity Regularized (SR) Generalized Likelihood Ratio Test (GLRT). It is shown that SR-GLRT using the optimal sampling scheme exhibits better performance than conventional compressed sensing structure, and furthermore effectively scales down the storage requirement and complexity with greater flexibility than conventional architectures.
AB - A sensitive receiver operation in multi-access reception is to detect the presence of training signals and identify sources from which the signals are sent, with a certain physical delay and center frequency. This is typically a sequential search, where the receiver tests the presence of specific signals and then acquires synchronization parameters (delays, Dopplers), for each component. In this paper, we develop an optimal compressive multichannel sampling (CMS) architecture, the output samples of which are fed to the proposed Sparsity Regularized (SR) Generalized Likelihood Ratio Test (GLRT). It is shown that SR-GLRT using the optimal sampling scheme exhibits better performance than conventional compressed sensing structure, and furthermore effectively scales down the storage requirement and complexity with greater flexibility than conventional architectures.
KW - Multichannel sampling
KW - compressed sensing
UR - http://www.scopus.com/inward/record.url?scp=84867599772&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84867599772&partnerID=8YFLogxK
U2 - 10.1109/ICASSP.2012.6288544
DO - 10.1109/ICASSP.2012.6288544
M3 - Conference contribution
AN - SCOPUS:84867599772
SN - 9781467300469
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 2993
EP - 2996
BT - 2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Proceedings
T2 - 2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012
Y2 - 25 March 2012 through 30 March 2012
ER -