Title: 16QAM fixed point demodulation method in HSDPA
Application Number: 200610095116 Application Date: 2006.09.12
Publication Number: 1917493 Publication Date: 2007.02.21
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H04L27/26;H04J11/00
Applicant(s) Name: Chongyouxinke Co., Ltd., Chongqing Address:
Inventor(s) Name: Wang Xizhu;Chen Xixi;Shen Min;Zheng Jianhong
Attorney & Agent: cun nanhua
Abstract:
    The invention relates to a method for de-modulating the fixed point data received by the receiving end when the sending end uses quadrature amplitude modulation (namely 16QAM). The method uses data before demodulating to accurately estimate SNR, and uses the SNR to construct the 16QAM constellation matching the received data; then using the constellation to make demodulation.
Time: 7