ROBUST NARROWBAND SYMBOL AND FRAME SYCHRONIZER FOR POWER-LINE COMMUNICATION
摘要
An embodiment is a method and apparatus to perform symbol synchronization. A correlation estimator computes a correlation of a sample vector representative of a narrowband signal. A synchronization detector detects symbol synchronization. Another embodiment is a method and apparatus to perform frame synchronization. A Fast Fourier Transform (FFT) processing unit computes a current FFT vector and an accumulated previous FFT vector. The current FFT vector and the accumulated previous FFT vector correspond to sample vectors associated with preamble symbols. A real and imaginary processing unit generates real and imaginary summations using the current FFT vector and the accumulated previous FFT vector. A mode processor generates mode flags representing operational modes using the real and imaginary summations.
申请公布号
WO2009149422(A2)
申请公布日期
2009.12.10
申请号
WO2009US46509
申请日期
2009.06.05
申请人
MAXIM INTEGRATED PRODUCTS, INC.;RAZAZIAN, KAVEH;UMARI, MAHER;LOGINOV, VICTOR, V.