The modulo-lattice channel: the key feature in precoding schemes

被引：17
|
作者：
Fischer, RFH [1 ]
机构：
[1] Univ Erlangen Nurnberg, Lehrstuhl Informat Ubertragung, D-91058 Erlangen, Germany
来源：
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2005年 / 59卷 / 04期
关键词：
precoding schemes; modulo channel; interference channel; lattice quantization; channel capacity;
D O I：
10.1016/j.aeue.2004.11.028
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：
Precoding for transmission over channels with interference known at the transmitter is reviewed. In contrast to what is usually discussed in literature, precoding employing higher-dimensional lattice quantization for generating the transmit signal is assessed. It is shown that thereby the gap between low-complexity schemes using scalar modulo reductions and theoretical asymptotic results assuming hypothetical optimum quantization operations can be bridged. In this paper, capacity curves obtained from numerical calculations, and approximations to the capacity are provided for various lattices. Moreover, the role of appropriate scaling at transmitter and receiver is discussed in detail. (c) 2004 Elsevier GmbH. All rights reserved.
引用
收藏
页码：244 / 253
页数：10
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