CQI and rank prediction for list sphere decoding and ML MIMO receivers

摘要

Systems and methodologies are described that facilitate integrating a list-sphere decoding design in a multiple input-multiple output (MIMO wireless communication environment. According to various aspects, optimal rank selection and CQI computation for an optimal rank can be performed in conjunction with a non-linear receiver, such as a maximum life (ML) MMSE receiver, a non-linear receiver with a list-sphere decoder, and the like. Optimal rank selection can be performed using a maximum rank selection protocol, a channel capacity-based protocol, or any other suitable protocol that facilitates rank selection, and CQI information can be generated based in part on effective SNRs determined with regard to a selected optimal rank.

主权项

1. A method of selecting rank of a non-linear receiver in a user device in a wireless communication environment, the method comprising:
receiving a transmission signal at a non-linear receiver; determining an indication of capacity of the non-linear receiver for each of a plurality of possible ranks of the non-linear receiver, each rank representative of a corresponding number of independent data streams received by the non-linear receiver, wherein determining the indication of capacity for each of the plurality of possible ranks includes computing successive interference cancellation (SIC) capacity for a respective matrix generated for the each of the plurality of possible ranks; and selecting a desired rank, of the plurality of ranks, representative of the number of the independent data streams received by the non-linear receiver, whose corresponding capacity is higher than the capacity corresponding to each other rank of the plurality of ranks.