Systems and Methods for Sparse Code Multiple Access

摘要

Coding gains can be achieved by encoding binary data directly to multi-dimensional codewords, which circumvents QAM symbol mapping employed by conventional CDMA encoding techniques. Further, multiple access can be achieved by assigning different codebooks to different multiplexed layers. Moreover, sparse codewords can be used to reduce baseband processing complexity on the receiver-side of the network, as sparse codewords can be detected within multiplexed codewords in accordance with message passing algorithms (MPAs).

主权项

1. A method for multiplexing data, the method comprising:
receiving a first binary or M-ary data associated with a first multiplexed layer; encoding the first binary or M-ary data by mapping the first binary or M-ary data to a first codeword associated with a binary or M-ary value of the first binary or M-ary data, wherein the first codeword is assigned to the first multiplexed layer; multiplexing the first codeword with at least a second codeword to obtain multiplexed codewords, wherein the second codeword is assigned to a second multiplexed layer; and transmitting the multiplexed codewords over shared resources of a network.