发明名称 |
A method of channel estimation in wideband CDMA communication |
摘要 |
A method of channel estimation in a wideband code division multiple access communication system is provided, which includes: 1) descrambling and despreading wideband spread spectrum signals inputted into a RAKE receiver; 2) taking out pilot symbols from each of time slots of dedicated physical control channel (DPCCH) according to a predetermined time slot format; 3) correlating each of the pilot symbols taken out, and getting a channel estimation value for each of the pilot symbols; 4) computing an arithmetical average value of the channel estimation values for all pilot symbols within each of time slots to get a channel estimate value for each of time slots; 5) getting a channel estimation value corresponding to a segment of pilot symbols for the current time slot; 6) getting a channel estimation value corresponding to a segment of data symbols for the current time slot; 7) compensating, and outputting the compensated data to a maximum ratio combining module to perform maximum ratio combining. The present invention can accurately estimate the corresponding channel characteristic for segment of pilot symbols and segment of data symbols within a time slot, therefore improves receiving performance in high speed moving environment in a wideband CDMA system. <IMAGE>
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申请公布号 |
EP1560388(A1) |
申请公布日期 |
2005.08.03 |
申请号 |
EP20020782643 |
申请日期 |
2002.11.18 |
申请人 |
ZTE CORPORATION |
发明人 |
XIONG, JIANQIU;ZHANG, JUNFENG;TIAN, DAN |
分类号 |
H04L25/02;(IPC1-7):H04L25/02 |
主分类号 |
H04L25/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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