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Method for determining reference phase in radio communication system which uses orthogonal M-ary modulation, and coherent detection method using the same
Method for determining reference phase in radio communication system which uses orthogonal M-ary modulation, and coherent detection method using the same
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机译:在使用正交M进制调制的无线电通信系统中确定参考相位的方法以及使用该方法的相干检测方法
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摘要
Reference phase is a radio communication system using orthogonal M-ary modulation is determined, so that a coherent detection system for a CDMA radio communication system is readily achieved. The determination of reference phase is performed by the step of determining a reference phase in a radio communication system, which uses orthogonal M-ary codes comprising the steps of determining the correlation values of an in-phase component and quadrature component corresponding to respective Hadamard matrices resulting from fast Hadamard transform or inverse Hadamard transform of a signal, which possesses said in-phase component and quadrature component, and which is sent from the sending end by phase shift keying an orthogonal M-ary code computing the sum of the squares of the respective correlation values of said in-phase component and quadrature component and selecting either said fast Hadamard transform or inverse Hadamard transform output, which outputs a maximum value of said computed sum of the squares.
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