Skip to main content

When to add another dimension when communicating over MIMO channels

Publication ,  Journal Article
Goparaju, S; Calderbank, AR; Carson, WR; Rodrigues, MRD; Perez-Cruz, F
Published in: ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
August 18, 2011

This paper introduces a divide and conquer approach to the design of transmit and receive filters for communication over a Multiple Input Multiple Output (MIMO) Gaussian channel subject to an average power constraint. It involves conversion to a set of parallel scalar channels, possibly with very different gains, followed by coding per sub-channel (i.e. over time) rather than coding across sub-channels (i.e. over time and space). The loss in performance is negligible at high signal-to-noise ratio (SNR) and not significant at medium SNR. The advantages are reduction in signal processing complexity and greater insight into the SNR thresholds at which a channel is first allocated power. This insight is a consequence of formulating the optimal power allocation in terms of an upper bound on error rate that is determined by parameters of the input lattice such as the minimum distance and kissing number. The resulting thresholds are given explicitly in terms of these lattice parameters. By contrast, when the optimization problem is phrased in terms of maximizing mutual information, the solution is mercury waterfilling, and the thresholds are implicit. © 2011 IEEE.

Duke Scholars

Published In

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings

DOI

ISSN

1520-6149

Publication Date

August 18, 2011

Start / End Page

3100 / 3103
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Goparaju, S., Calderbank, A. R., Carson, W. R., Rodrigues, M. R. D., & Perez-Cruz, F. (2011). When to add another dimension when communicating over MIMO channels. ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 3100–3103. https://doi.org/10.1109/ICASSP.2011.5946351
Goparaju, S., A. R. Calderbank, W. R. Carson, M. R. D. Rodrigues, and F. Perez-Cruz. “When to add another dimension when communicating over MIMO channels.” ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, August 18, 2011, 3100–3103. https://doi.org/10.1109/ICASSP.2011.5946351.
Goparaju S, Calderbank AR, Carson WR, Rodrigues MRD, Perez-Cruz F. When to add another dimension when communicating over MIMO channels. ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. 2011 Aug 18;3100–3.
Goparaju, S., et al. “When to add another dimension when communicating over MIMO channels.” ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, Aug. 2011, pp. 3100–03. Scopus, doi:10.1109/ICASSP.2011.5946351.
Goparaju S, Calderbank AR, Carson WR, Rodrigues MRD, Perez-Cruz F. When to add another dimension when communicating over MIMO channels. ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings. 2011 Aug 18;3100–3103.

Published In

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings

DOI

ISSN

1520-6149

Publication Date

August 18, 2011

Start / End Page

3100 / 3103