Simple Bounds for the Symmetric Capacity of the Rayleigh Fading Multiple Access Channel

Elad Domanovitz, Uri Erez

Research output: Contribution to journalArticlepeer-review


Communication over the i.i.d. Rayleigh slow-fading MAC is considered, where all terminals are equipped with a single antenna. Further, a communication protocol is considered where all users transmit at (just below) the symmetric capacity (per user) of the channel, a rate which is fed back (dictated) to the users by the base station. Tight bounds are established on the distribution of the rate attained by the protocol. In particular, these bounds characterize the probability that the dominant face of the MAC capacity region contains a symmetric rate point, i.e., that the considered protocol strictly attains the sum capacity of the channel. The analysis provides a non-asymptotic counterpart to the diversity-multiplexing tradeoff of the multiple access channel. We then extend this analysis to general multiple-input multiple-output MAC and finally, a practical scheme based on integer-forcing and space-time precoding is shown to be an effective coding architecture for this communication scenario.

Original languageEnglish
Article number9068445
Pages (from-to)4594-4603
Number of pages10
JournalIEEE Transactions on Wireless Communications
Issue number7
StatePublished - Jul 2020


  • Multiple access
  • Rayleigh channels
  • multiple-input multiple-output (MIMO)

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics


Dive into the research topics of 'Simple Bounds for the Symmetric Capacity of the Rayleigh Fading Multiple Access Channel'. Together they form a unique fingerprint.

Cite this