Method and multi-user uplink receiver for different types of multiple access schemes

A successive interference cancellation (SIC) based multi-user uplink receiver (200) comprising:

• a plurality of antennas (202.1, . . . , 202.R) configured for receiving analog wireless signal from one or more transmitters corresponding to one or more users;
• a plurality of analog-to-digital converter (ADC) devices (204.1, . . . , 204.R) for converting analog wireless signals to corresponding digital signals;
• at least one processor (206) communicatively coupled with the one or more antennas (202.1, . . . , 202.R) and the plurality of ADC devices (204.1, . . . , 204.R), the at least one processor (206) is configured to:
• receive, by the plurality of antennas (202.1, . . . , 202.R) of the multi-user uplink receiver (200) at a base station (100) or access point, signal of one or more multiple-access (MA) scheme waveforms from one or more users, wherein the received signal in each antenna of the plurality of antenna relates to a composite signal from one or more users;
• determine one or more effective channel matrices corresponding to the plurality of antennas (202.1, . . . , 202.R), wherein each of the one or more effective channel matrices for a corresponding antenna of the plurality of antennas (202.1, . . . , 202.R) is determined based on a type of the MA scheme waveforms from the one or more users in the corresponding antenna, and a length of received signal in the corresponding antenna from the one or more users;
• perform, by a channel equalization technique using each of the one or more effective channel matrices, channel equalization for signal received in the corresponding antenna from one or more users;
• combine, using an Equal Gain Combining (EGC) technique, channel equalized signal from the plurality of antennas (202.1, . . . , 202.R) to form a combined estimated effective transmission signal from the one or more users;
• detect Correctly Decoded Code Blocks (CCBs) and Wrongly Decoded Code Blocks (WCBs) of the received signal from each user of the one or more users;
• and
• perform the SIC on received signals from one or more users until all WCBs are converted to CCBs in or a maximum number of threshold iterations are completed.