| 摘要 |
A differential receiver which receives a signal corresponding to transmission of a carrier modulated by symbols Sk, where k is an integer designating an order of the symbol, each symbol Sk has a duration Ts and carries information, and the symbols Sk have been multiplied by a psuedorandom sequence. The differential receiver includes a first processing channel configured to receive a first part of the transmitted signal in phase with the carrier to generate samples Ik and delayed samples Ik-1. The receiver further includes a second processing channel configured to receive a second part of the transmitted signal in phase quadrature with the carrier to generate samples Qk and delayed samples Qk-1. In addition, the receiver includes a multiplication circuit configured to generate a signal Dot(k) equal to IkIk-1 +QkQk-1 and a signal Cross(k) equal to QkIk-1-IkQk-1, a calculating mechanism configured to calculate, for each order k of a symbol, the following equation: E=[Dot(k)2+Cross(k)2]+E,fra 1/2+EE , and configured to calculate a mean Emoy, a weighting circuit having two multipliers configured to respectively multiply the signal Emoy and the signals Dot(k) and Cross(k) to obtain a mean signal Dot(k)moy and a mean signal Cross(k)moy, and a circuit configured to receive the mean signal Dot(k)moy and the mean signal Cross(k)moy supplied by the calculating mechanism to integrate the mean signals on the time of a symbol and restore the corresponding information.
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