Multiuser PSK-Chirp-BOK Communication System Under Co-Channel Interference

被引：7

作者：

Roy, Arijit ^{[1
]}

Nemade, Harshal B. ^{[1
]}

Bhattacharjee, Ratnajit ^{[1
]}

机构：

[1] Indian Inst Technol Guwahati, Dept Elect & Elect Engn, Gauhati 781039, India

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2020年 / 67卷 / 03期

关键词：

Chirp modulation; binary orthogonal keying; multiuser communication; waveform design; co-channel interference; fractional Fourier transform;

D O I：

10.1109/TCSII.2019.2914056

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：

A chirp binary orthogonal keying (BOK) system normally transmits 1 bit per symbol and requires two correlators at the receiver. This brief presents a chirp-BOK system incorporating phase shift keying (PSK) modulation, viz., PSK-chirp-BOK system, to double the transmission rate while using only two correlators. Design of a set of orthogonal chirps is presented to minimize the performance degradation due to non-orthogonality between up-chirps and down-chirps in a PSK-chirp-BOK multiuser system. In an effort to reduce the required total system bandwidth while maintaining the same number of chirps for a multiuser system, a time domain multiplexing of orthogonal chirp sets with filtering using fractional Fourier transform is proposed. Symbol error rate performance of the proposed PSK-chirp-BOK system in a multiuser environment under Nakagami-m fading with the effect of co-channel interference is analyzed. Benefits of the proposed scheme over the existing ones are also outlined.

引用

页码：465 / 469

页数：5

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