DS/SS 시스템에서의 차등 검파 기법을 이용한 비동기식 적응형 코드 위상 검출 방법

Noncoherent adaptive code acquisition scheme using a differential detection technique in DS/SS systems

Adaptive filter based code acquisition scheme offers a fast acquisition with a low error probability. However, it has been studied only under a coherent environment. In this paper, the noncoherent adaptive code acquisition scheme employing a differential detection technique is proposed. For the proposed scheme, system probabilities and the mean acquisition time are analyzed numerically. Simulation results show that the proposed system outperforms over the conventional matched filter by 2-4 ㏈ under AWGN channel for 16 taps.