发明名称 |
METHOD AND SYSTEM FOR MULTI-USER CHANNEL ESTIMATION IN DS-CDMA SYSTEMS |
摘要 |
<p>The method and system for multi-user channel estimation in a multi-access network comprises: providing a communication signal (ri) providing an estimated communication signal Formula (I) generated using a spreading code signal (Ci), an information sequence signal (Bi) and a predicted composite channel impulse response signal Formula (II); comparing the communication signal (ri) to the estimated communication signal Formula (I) to provide an error signal (ɛi); and generating an estimated composite channel impulse response signal Formula (III) using the error signal (ɛi), the spreading code signal (Ci) and the information sequence signal (Bi); the predicted composite channel impulse response signal Formula (II) providing the multi-user channel estimation. The proposed method, which is based on a LMS like algorithm, is an efficient and low complexity method allowing estimating and tracking even fast times varying multi-path channels. Instantaneously, the composite channel impulse response is computed and estimates of all possible path energies are computed to be used as an indicator of the significant paths (delays).</p> |
申请公布号 |
WO2005099130(A1) |
申请公布日期 |
2005.10.20 |
申请号 |
WO2005CA00543 |
申请日期 |
2005.04.08 |
申请人 |
AXIOCOM INC.;AHMED-OUAMEUR, MESSAOUD;MASSICOTTE, DANIEL |
发明人 |
AHMED-OUAMEUR, MESSAOUD;MASSICOTTE, DANIEL |
分类号 |
H04B1/707;H04B7/005;H04B7/204;H04B7/216;H04B17/00;H04L25/02;(IPC1-7):H04B7/204 |
主分类号 |
H04B1/707 |
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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