Patent ID: 9590768
Date: 2017-03-07
CPC Classifications: H04B,H04J,H04L

Claim:
1. A method, performed in a receiver device, for decoding a plurality of concurrent transmissions of sets of coded information bits from a plurality of transmitters using a common antenna buffer, the method being performed independently for each transmitter, for a set of coded information bits, wherein the method comprises performance of operations comprising: (a) deriving a first set of received symbols from first received data corresponding to a first concurrent transmission of the plurality of concurrent transmissions, the first received data being stored in the common antenna buffer; (b) deriving a second set of received symbols from second received data corresponding to a second concurrent transmission of the plurality of concurrent transmissions, the second received data being stored in the common antenna buffer, wherein the first received data and the second received data are stored in the common antenna buffer as superimposed data; (c) converting the first set of received symbols to a first set of soft coded bit estimates; (d) converting the second set of received symbols to a second set of soft coded bit estimates; (e) combining the first set of soft coded bit estimates and the second set of soft coded bit estimates to a combined set of soft coded bit estimates; (f) decoding the combined set of soft coded bit estimates to a set of soft information bit estimates; (g) converting the set of soft information bit estimates to a set of binary bits; (h) determining whether the set of binary bits has been correctly or incorrectly decoded; (i) performing interference cancellation on the first received data in the common antenna buffer; (j) performing interference cancellation on the second received data in the common antenna buffer; and repeating operations (a)-(j) until either the set of binary bits has been correctly decoded or a predefined maximum number of iterations is reached.