Method and system for efficient error free packet reception using hybrid automatic repeat-request (HARQ) in a wireless communication system

摘要

The present invention relates to a method and system for efficient error free packet reception using hybrid automatic repeat-request (HARQ) in a wireless communication system. In one embodiment this is accomplished by receiving in a plurality of modulated digital data as transmission signal at a receiver transmitted through a plurality of transmission paths from a transmitter, demodulating the received transmission signals, estimating the difference between the received transmission signals and the ideal expected signal constellation in order to determine the weights for each constellation symbols, applying the determined weights for each symbol-wise of the received transmission data, storing the weighted data as final data in a buffer of a HARQ combining unit and processing the stored final data to determine whether the received data frames are correct.

主权项

1. A method for efficient error free packet reception using hybrid automatic repeat-request (HARQ) in a wireless communication system, the method comprising:
receiving a plurality of modulated digital data as transmission signals at a receiver transmitted through a plurality of transmission paths from a transmitter, the received transmission signals having a signal constellation set comprising orthogonal frequency division multiplexing (OFDM) symbols; demodulating the received transmission signals, wherein demodulating the received transmission signals further comprises demodulating the OFDM symbols to determine soft bits and an error vector magnitude (EVM), wherein determining the EVM comprises determining a distance between the received transmission signals and an expected transmission signals, and wherein determining the distance comprises determining the distance from in-phase and quadrature phase components of the received transmission signals and the expected transmission signals; determining weights for each the OFDM symbols based on the determined EVM; applying the determined weights for each symbolwise of the received transmission data; storing the weighted data as final data in a buffer of a HARQ combining unit; and processing the stored final data to determine whether the received data frames are correct.