ENHANCED PRE-ORDERED PRE-WEIGHTED TRANSMISSION

摘要

Systems and methods for uplink (UL) and downlink (DL) communications can improve channel capacity between one or more access nodes and one or more terminal nodes. The communications may utilize, for example, multi-user multiple-input multiple-output techniques with cooperation between access nodes. A network node may determine an ordering combination and associated pre-weighting values, provide the pre-weighting values to one or more terminal nodes, receive signals transmitted from the terminal nodes using the pre-weighting values; and process the received signals using the ordering combination and the pre-weighting values. Two constraints can be jointly used: a minimum performance constraint and a maximum transmit power constraint. Example systems search all possible ordering combinations to find a best combination, for example, the ordering combination that maximizes communication rates. The ordering combination may be used with combinations of full or partial successive interference cancellation in receivers and full or partial iterative pre-cancellation pre-coding in transmitters.

主权项

1. A method for receiving uplink communications in network node of a communication system, the method comprising:
determining an ordering combination and determining pre-weighting values associated with the ordering combination for use by at least one terminal node, the pre-weighting values being determined based on a transmit power constraint and a minimum performance constraint; providing the pre-weighting values to the at least one terminal node; receiving a signal for each of at least one antenna, each received signal comprising a plurality of transmitted signals from the at least one terminal node based at least in part on the pre-weighting values; and processing the received signal for each of the at least one antenna using the determined ordering combination and the determined pre-weighting values.