Title :
Achievable rates for transmission of discrete constellations over the Gaussian MAC channel
Author :
Ghaffar, Rizwan ; Toumpakaris, Dimitris ; Lee, Jungwon
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Waterloo, Waterloo, ON, Canada
Abstract :
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.
Keywords :
Gaussian channels; multi-access systems; pulse amplitude modulation; Gaussian MAC channel; Gaussian multiple access channel; PAM; discrete constellation transmission; orthogonal transmission; suboptimal transmission schemes; uncoded pulse amplitude modulation; AWGN channels; Decoding; Electronic mail; Power control; Receivers; Signal to noise ratio; Time division multiple access;
Conference_Titel :
ICT Convergence (ICTC), 2011 International Conference on
Conference_Location :
Seoul
Print_ISBN :
978-1-4577-1267-8
DOI :
10.1109/ICTC.2011.6082540
