Signal-Code Construction Based on Codes on Gilbert-Varshamov Bound for Multiple Access System over Vector-Disjunctive Channel

Abstract

We consider a signal-code construction for a special class of multiple access system over vector-disjunctive channel when users transmit some vector of bits of length L. Suggested scheme is based on codes on Gilbert-Varshamov bound that allows us to estimate reachable limit of code rate. In order to analyze complex expression of relative sum-rate we provide an estimation. We present simulation results for optimal parameters for relative sum-rate. Simulation results we obtained allow us to conclude that maximum achievable sum-rate is about 0.35.