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Generalized time sharing: a low-complexity capacity-achieving multiple-access technique

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1 Author(s)
Rimoldi, B. ; Mobile Commun. Lab., Swiss Federal Inst. of Technol., Lausanne, Switzerland

It is shown that the encoding/decoding problem for any asynchronous M-user memoryless multiple-access channel (MAC) can be reduced to corresponding problems for at most 2M-1 single-user memoryless channels. This is done via a method called generalized time sharing that is closely related to a previously developed method called rate-splitting multiple access. These methods reduce the seemingly hard task of finding good multiple-access codes and implementable decoders for such codes to the much better understood task of finding codes and decoders for single-user channels. As a by-product, some interesting properties of the capacity region of M-user asynchronous discrete memoryless channels are derived

Published in:

Information Theory, IEEE Transactions on  (Volume:47 ,  Issue: 6 )

Date of Publication:

Sep 2001

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