Power and spectrally efficient multi-dimensional WCDMA modem employing CPM

被引：0

作者：

Basilio, D. J. ^{[1
]}

Linde, L. P. ^{[1
]}

Maharaj, B. T. ^{[1
]}

机构：

[1] Univ Pretoria, ZA-0002 Pretoria, South Africa

来源：

2007 AFRICON, VOLS 1-3 | 2007年

关键词：

multi-dimensional quadrature phase shift keying (M-D QPSK); direct sequence spread spectrum (DSSS); constant envelope linear root-of-unity (CE-LRU); generalized chirp-like (GCL); complex spreading sequence (CSS); code position modulation (CPM); power spectral density (PSD); wideband code division multiple access (WCDMA);

D O I：

暂无

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

This paper introduces a multi-dimensional quadrature phase shift keying (MD-QPSK) structure for a direct sequence spread spectrum (DSSS) modem that employs constant envelope linear root-of-unity (CE-LRU) filtered generalized chirp-like (GCL) complex spreading sequences (CSS's) and codeposition-modulation (CPM). The resulting MD-QPSK CPM modem exhibits a spectrally efficient minimum (Nyquist) bandwidth output power spectral density (PSD). In addition, the transmitter output signal power is virtually constant. It is shown that the MD-QPSK CPM modem's data transmission rate is larger than other proposed WCDMA systems that use these unique CSS's, with a negligible difference in spectral occupancy.

引用

页码：868 / 873

页数：6