Graduate School and Research Center in Digital Sciences

Performance-complexity analysis for MIMO multiple-access channels with lattice based sphere decoders

Singh, Arun; Elia, Petros; Lu, Hsiao-feng

APWCS 2014, 11th IEEE Vehicular Technology Society Asia Pacific Wireless Communications Symposium, 8-29 August, 2014, Ping Tung, Taiwan

This paper extends the complexity analysis [1]-[3] for MIMO point-to-point systems, to the case of the multiple access channel (MAC). Specifically we derive upper bounds on the complexity exponent required to achieve the optimal diversity multiplexing-gain tradeoff (DMT) performance dmac(r) of the symmetric MAC with K single antenna transmitters and a receiver having nr antennas. Finally we show how utilizing a few bits of feedback to allow for user selection, can in fact result in substantial complexity reductions, while at the same time improving the DMT performance.

Document Bibtex

Title:Performance-complexity analysis for MIMO multiple-access channels with lattice based sphere decoders
City:Ping Tung
Department:Communication systems
Eurecom ref:4509
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Bibtex: @inproceedings{EURECOM+4509, year = {2014}, title = {{P}erformance-complexity analysis for {MIMO} multiple-access channels with lattice based sphere decoders}, author = {{S}ingh, {A}run and {E}lia, {P}etros and {L}u, {H}siao-feng}, booktitle = {{APWCS} 2014, 11th {IEEE} {V}ehicular {T}echnology {S}ociety {A}sia {P}acific {W}ireless {C}ommunications {S}ymposium, 8-29 {A}ugust, 2014, {P}ing {T}ung, {T}aiwan}, address = {{P}ing {T}ung, {TAIWAN}, {PROVINCE} {OF} {CHINA}}, month = {08}, url = {} }
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