Theoretical performance comparison between reference-based coherent BPSK and BCH coded differential BPSK

Abstract

Both channel sounding and channel coding are well-known techniques for improving BER performance of data transmission over a narrow band mobile radio channel. The two techniques share a common ground with regard to the fact that both of them employ redundancy signals (reference signals for channel sounding and parity check bits for channel coding) to achieve the improved performance. In this paper, a comparison of theoretical PSK performance in BER is made between the referencebased coherent detection and the BCH coded differential detection under different fading conditions. Comparisons are also made between reference-based coherent detection and BCH coded decision-feedback DPSK.

A Low Error Rate BCH-Based Encoder-Decoder Approach for Electromagnetic Measurement While Drilling System

“…In addition, Manchester code is also widely used in mud MWD [15]. These signals have abundant low-frequency components, we cannot transmit such signals in actual EM-MWD channels directly because of the band-pass characteristics in the channels unless they are modulated by carrier modulation [16], [17]. To solve this problem, Haliburton proposed phase shift keying (PSK) [18], and Sinopec uses binary phase shift keying in the prototype named CEM-1 [19].…”