Title: Channel coherence detection method for intelligent antenna base station
Application Number: 200410009798 Application Date: 2004.11.15
Publication Number: 1777071 Publication Date: 2006.05.24
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H04B17/00
Applicant(s) Name: Zhongxing Communication Co., Ltd. Address: 518057
Inventor(s) Name: Kang Fengqi, Wang Yunfeng
Attorney & Agent: liang hui xu jinguo
Abstract:
     Being in use for testing multiple up going channels or multiple down going channels of base station, the method includes uses one channel as standard channel, another channel as channel to be tested, and closes up other channels; keeping weight value of standard channel unchanged, and changing weight value of channel to be tested to make synthetic power in-band minimum, which is as value of first power; adding 180 degrees to or subtracting 180 degrees from the weight value and recording the synthetic power in-band as value of second power at this point; determining coherence between channel to be tested and standard channel based on different value between second and first values of power; keeping standard channel unchanged, and selecting the rest of channels one by one as channel to be tested; determining the said coherence from one channel to another. The invention solves issue of that there is no dedicated instrument to measure coherence between channels.
Time: 5