关键词: 自适应干扰抵消, 同址干扰, 跳频通信, 导频, 共用天线

Abstract:

A method of frequency hopping (FH) co-site interference cancellation using community antenna and pilot (CAP-FH-AIC) is proposed according to the analysis of the characteristic of the FH co-site interference. The structure of the canceller is transformed from multi-reference adaptive FH co-site interference cancellation (M-AIC) to single-reference adaptive fixed-tuned co-site interference cancellation (S-AIC) only by adding an additional generator of the pilot signal and an additional band-bass filter. It can realize the cancellation of the FH co-site interference and get almost the same performance of the adaptive fixed-tuned co-site interference cancellation. The theoretical inference and simulation confirm that the algorithm can get the advantage of steady performance in FH co-site interference suppression.

Key words: adaptive interference cancellation, co-site interference, frequency hopping communications, pilot, community antenna