发明名称 |
SPACE DIVERSITY RECEPTION SYSTEM FOR MULTI-VALUE QUADRATURE AMPLITUDE MODULATION |
摘要 |
PURPOSE:To attain the transmission with high quality and simple hardware constitution in a line having a rapid fading fluctuation by integrating fading distortion compensation and maximum ratio synthesis space diversity synthesis in the multi-value quadrature amplitude modulation system. CONSTITUTION:A transmission line distortion estimate section 29 estimates a transmission line distortion of each branch from a reception base band signal in a frame timing. A phase compensation section 30 based on an obtained phase fluctuation estimate value compensates the phase distortion due to fading of a reception signal of each antenna to make phases of signals of each antenna in-phase. A synthesis section 31 applies weighting proportional to the amplitude fluctuation of each antenna due to fading obtained in this way and applies synthesis. A decoding section 32 calculates the discrimination threshold level after synthesis to decode a data. Thus, the transmission with high quality and simple hardware constitution is attained. |
申请公布号 |
JPH02305135(A) |
申请公布日期 |
1990.12.18 |
申请号 |
JP19890124131 |
申请日期 |
1989.05.19 |
申请人 |
YUUSEISHIYOU TSUSHIN SOGO KENKYUSHO |
发明人 |
SANPEI MASAICHI;SUNAGA TERUMI |
分类号 |
H04L27/34;H04B7/08;H04L1/06 |
主分类号 |
H04L27/34 |
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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