DIFFERENTIAL DETECTION OF PI/4-SHIFTED-DQPSK FOR DIGITAL CELLULAR RADIO

被引：47

作者：

CHENNAKESHU, S ^{[1
]}

SAULNIER, GJ ^{[1
]}

机构：

[1] RENSSELAER POLYTECH INST,DEPT ELECT COMP & SYST ENGN,TROY,NY 12180

来源：

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 1993年 / 42卷 / 01期

关键词：

D O I：

10.1109/25.192386

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper discusses the detection of pi/4-shifted-DQPSK modulation using a tangent type differential detector with an integrated symbol timing and carrier frequency offset correction algorithm. Pi/4-shifted-DQPSK modulation has been proposed for use in a high capacity, TDMA-based digital cellular system which is being developed in the U.S.; differential detection could potentially allow the production of low-complexity mobile units. Consequently, this paper presents results obtained using the proposed IS-54 TDMA frame structure for base to mobile transmissions. Theoretical and simulation bit-error-rate (BER) results are presented for static and Rayleigh fading channels. BER results are provided as a function of E(b)/N0 and C/I, where the interferer is a second pi/4-shifted-DQPSK signal. Additional results are provided which show the BER sensitivity to Doppler frequency shifts, time delay spread, and carrier frequency offsets.

引用

页码：46 / 57

页数：12

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