TY - JOUR
T1 - Collaboration in multiple access channels requires synchronization
AU - Mendlovic, Uri
AU - Feder, Meir
N1 - Publisher Copyright:
© 1963-2012 IEEE.
PY - 2016/4
Y1 - 2016/4
N2 - Classical multiple access channel (MAC) coding schemes assume independent transmitted signals, because the given messages are assumed to be independent and the remote transmitters cannot cooperate. However, when the messages are correlated, or in the extreme case of fully cooperative transmitters, a better performance may be achieved. We explore the performance gain of this collaboration and its connection to transmission synchronization. For totally asynchronous transmitters, we prove that transmitters' collaboration has no performance gain. This result is shown for finite-alphabet memoryless MACs and for the additive white Gaussian noise MAC.
AB - Classical multiple access channel (MAC) coding schemes assume independent transmitted signals, because the given messages are assumed to be independent and the remote transmitters cannot cooperate. However, when the messages are correlated, or in the extreme case of fully cooperative transmitters, a better performance may be achieved. We explore the performance gain of this collaboration and its connection to transmission synchronization. For totally asynchronous transmitters, we prove that transmitters' collaboration has no performance gain. This result is shown for finite-alphabet memoryless MACs and for the additive white Gaussian noise MAC.
KW - Multiuser channels
UR - https://www.scopus.com/pages/publications/84963812539
U2 - 10.1109/TIT.2016.2530661
DO - 10.1109/TIT.2016.2530661
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AN - SCOPUS:84963812539
SN - 0018-9448
VL - 62
SP - 1971
EP - 1979
JO - IEEE Transactions on Information Theory
JF - IEEE Transactions on Information Theory
IS - 4
M1 - 7415968
ER -