The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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${\frac{\pi}{4}}$-DQPSK with Nonredundant error correction in Nakagami fading channel

나카가미 페이딩채널에서 비용장 오류정정을 갖는 ${\frac{\pi}{4}}$-DQPSK의 성능분석

  • 송석일 (한국전자통신연구원 정회원) ;
  • 한영열 (한양대학교 전자통신공학과 정회원)
  • Published : 1999.12.01
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Abstract

The error rate performance of the proposed $\pi$/4-differential quadructure phase shift keying( $\pi$/4-DQPSK) with nonredundant multiple error correction is analyzed for Nakagami fading channel. The scheme for differential detection of $\pi$/4-QPSK with nonredundant multiple error correction utilizes the output that employ the received signal delayed by more than two time slots. It was observed that the performance increased as the error correction capability increased.

본 논문에서는 비용장 다중오류정정을 갖는 $\pi$/4-QPSK의 차동검파 시스템을 이용하여 가산성 가우시안 백색잡음(additive white Gaussian noise: AWGN)과 나카가미 늦은 페이딩(Nakagami slow fading)채널로 모델링된 이동통신채널에서 성능이 분석연구되었다. 비용장 다중오류정정은 두 개 이상의 타임스롯(time slots)만큼 지연되어 수신된 신호를 이용하여 형성된 출력이 패리티체크 비트가 되어 오류정정에 이용되었으며, 비용장연속 다중오류정정(NEC)의 차수가 증가함에 따라 성능이 증가됨을 보이고 나카가미 페이딩 변수가 증가함에 따라도 성능이 증가됨을 보였다.

Keywords

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