Information Rates on a Symbol-Asynchronous Multi-Access Channel

Capacity of uncoordinated multiple access channel (MAC) with single-user demodulation has been studied in literature under various assumptions for symbol-synchronous transmission. This paper considers symbol-asynchronous uncoordinated transmission on a binary continuous-time noiseless MAC. It first proposes and develops a new multi-user interference analysis approach that in turn allows exact evaluation of the mutual information on the multi-access channel. Consequently, the sum-capacity of the considered binary symbol-asynchronous uncoordinated MAC is determined.