Process and receiver for interference cancellation of interfering base stations in a synchronized OFDM system

摘要

A process and receiver for canceling interference generated by a set interference base stations in a synchronized OFDM communication system and receiver in a User Equipment comprising a set of Nrx antennas. The process and receiver that cancels interference generated by a set of base stations performs OFDM demodulation on a receiver signal for each antenna of a user equipment (UE). The process and receiver also monitors each UE antenna for pilot signals generated by nearby base stations. Then the process or receiver extracts the pilot signals and establishes a list of existing base station antennas. The channel power of any interfering antennas is measured and then the Nrx-N most powerful antenna is selected. The process or receiver then performs a joint detection of the N useful Data Symbols (UDS), together with the (Nrx-N) Interfering Data Symbols (IDS) that are demodulated by demodulation blocks. Thus, after being detected, the Nrx-N most powerful IDSs can be encoded and re-injected into a cancellation loop.

主权项

1. A process for canceling interference generated by a set interference base stations in a synchronized OFDM communication system that is received in a User Equipment comprising a set of Nrx antennas, the process comprising:
performing an OFDM demodulation of the received signal from each Nrx antenna of said UE; monitoring, on each Nrx antenna of said UE, pilot signals generated by one or more present base stations; extracting said pilot signals and establishing a list of existing base station antennas; measuring a channel power of one or more interfering antennas of the set of Nrx antennas; selecting the Nrx-N antennas receiving the most powerful interfering channels; performing a joint detection of N Useful Data Symbol (UDS) streams and (Nrx-N) Interfering Data Symbol (IDS) streams that were demodulated by OFDM demodulation blocks in the User Equipment.