Error Performance and Modeling of RS-code/SFH/π/4-DQPSK Signal Transmission in Two-Ray Fading

• Main Authors: Chien Hung Yen, 簡鴻彥
• Other Authors: Chung Char Dir
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/08727060289173744084

碩士 === 國立中央大學 === 電機工程研究所 === 87 === The communication system considered here is according to the project “Design of Wireless Campus Multimedia Communication System” which is proposed in 1999. This project wants to build a single cell wireless multimedia communication system in the campus of National Central University. The communication system contains Reed-Solomon encoding, interleaving scheme, π/4-DQPSK modulation, slow frequency hopping, root raised cosine filter, differential detection, hard decision, and Berlekamp decoder. The project uses ISM band, so the system should observe the standard. The channel environment is assumed time non-selective and frequency selective Rayleigh fading. The channel model of this thesis is two-ray fading channel. The performance of this communication system is assessed, and the characteristic of burst error is observed. Besides, because the convenience of using mathematical model, the model of burst error is built. The models considered here are simplified Fritchman’s model (SFM) and hidden Markov model (HMM). These models are also introduced and compared here.