Inner Bound on the GDOF of the K-User MIMO Gaussian Symmetric Interference Channel
Data(s) |
2013
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Resumo |
The K-user multiple input multiple output (MIMO) Gaussian symmetric interference channel where each transmitter has M antennas and each receiver has N antennas is studied from a generalized degrees of freedom (GDOF) perspective. An inner bound on the GDOF is derived using a combination of techniques such as treating interference as noise, zero forcing (ZF) at the receivers, interference alignment (IA), and extending the Han-Kobayashi (HK) scheme to K users, as a function of the number of antennas and the log INR/log SNR level. Several interesting conclusions are drawn from the derived bounds. It is shown that when K > N/M + 1, a combination of the HK and IA schemes performs the best among the schemes considered. When N/M < K <= N/M + 1, the HK-scheme outperforms other schemes and is found to be GDOF optimal in many cases. In addition, when the SNR and INR are at the same level, ZF-receiving and the HK-scheme have the same GDOF performance. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/52199/1/IEEE_Tra_on_Com_61-1_%20187_2013.pdf Mohapatra, Parthajit and Murthy, Chandra R (2013) Inner Bound on the GDOF of the K-User MIMO Gaussian Symmetric Interference Channel. In: IEEE TRANSACTIONS ON COMMUNICATIONS, 61 (1). pp. 187-196. |
Publicador |
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
Relação |
http://dx.doi.org/10.1109/TCOMM.2012.120117.120117 http://eprints.iisc.ernet.in/52199/ |
Palavras-Chave | #Electrical Communication Engineering |
Tipo |
Journal Article PeerReviewed |