发明名称 |
DIVERSITY RECEIVER AND ITS CONTROL METHOD |
摘要 |
Enabling reception quality to be improved and the capacity in terms of the number of simultaneous users in a cell to be increased, and speeding up the establishment of spreading code synchronization and the convergence of weighted coefficients, by feedback controlling weighted coefficients such that desired signal power to interference power ratio (SIR) becomes maximum. A coherent adaptive diversity configuration is employed to which absolute coherent detection is applicable. Adaptively feeding weighted coefficients back to diversity branches makes it possible to reduce the influence of the interference power from other users, and thus to increase the capacity in terms of the number of simultaneous users in the cell. Furthermore, the direction that provides the maximum received SIR is determined while rotating antennas in a state of having directivity with a predetermined angle range. Setting initial values of the weighted coefficients at values corresponding to that direction enables the weighted coefficients to converge quickly. ~~~~ |
申请公布号 |
CA2211619(C) |
申请公布日期 |
2002.01.29 |
申请号 |
CA19962211619 |
申请日期 |
1996.11.28 |
申请人 |
NTT MOBILE COMMUNICATIONS NETWORK INC. |
发明人 |
HIGUCHI, KENICHI;MIKI, YOSHINORI;TANAKA, SHINYA;ANDO, HIDEHIRO;SAWAHASHI, MAMORU |
分类号 |
H04B1/707;H04B1/712;H04B7/08;H04B7/10;H04L1/02;H04L1/06;H04W16/28 |
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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