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Achievable rates for transmission of discrete constellations over the Gaussian MAC channel

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3 Author(s)
Ghaffar, R. ; Dept. of Electr. & Comput. Eng., Univ. of Waterloo, Waterloo, ON, Canada ; Toumpakaris, D. ; Jungwon Lee

In this paper we examine the achievable rate region of the Gaussian Multiple Access Channel (MAC) when suboptimal transmission schemes are employed. Focusing on the two-user case and assuming uncoded Pulse Amplitude Modulation (PAM), we derive a rate region that is a pentagon, and propose a strategy with which it can be achieved. We also compare the region with outer bounds and with orthogonal transmission.

Published in:

ICT Convergence (ICTC), 2011 International Conference on

Date of Conference:

28-30 Sept. 2011