CPM-Based Spread Spectrum Systems for Multi-User Communications

被引：11

作者：

Mazzali, Nicolo ^{[1
,2
]}

Colavolpe, Giulio ^{[1
,2
]}

Buzzi, Stefano ^{[3
,4
]}

机构：

[1] Univ Parma, Dipartimento Ingn Informaz, I-43100 Parma, Italy

[2] CNIT Res Unit, I-43124 Parma, Italy

[3] Univ Cassino & Lazio Meridionale, DIEI, I-03043 Cassino, Italy

[4] CNIT Res Unit, I-03043 Cassino, Italy

来源：

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2013年 / 12卷 / 01期

关键词：

Continuous-phase modulations; multiuser detection; spectral efficiency; spread spectrum systems; CONTINUOUS-PHASE MODULATION; INFORMATION RATES; CDMA; DECOMPOSITION; PERFORMANCE;

D O I：

10.1109/TWC.2012.120412.120583

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：

We propose a new spread spectrum (SS) system based on continuous-phase modulations (CPMs). The main idea is to exploit the sequence of modulation indices of a multi-h CPM as a frequency-hopping (FH) sequence. Spectral spreading, flatness and smoothness can be easily achieved by an appropriate choice of the maximum value of the modulation index and of the length of the index sequence. We will show that the proposed CPM-based spread spectrum system achieves an overall spectral efficiency larger than that of a single-user single-h CPM transmission even when a single-user detector is employed at the receiver. It also outperforms other solutions in the literature. In addition, we will also derive some suboptimal multi-user detectors.

引用

页码：358 / 367

页数：10

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