Effective ICI matrix and its compensation in SCFDMA communication system

2015 7th International Conference on Communication Systems and Networks (COMSNETS) Pub Date : 1900-01-01 DOI:10.1109/COMSNETS.2015.7098678

M. DeepakP., C. K. Ali

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引用次数: 3

Abstract

DFT spread OFDMA popularly known as Single carrier frequency division multiple access (SCFDMA) is an emerging wireless standard and has received considerable attention because of its ability to incorporate advantages of single carrier modulation with OFDMA. Even though SCFDMA has low peak to average power ratio (PAPR) and resistance to frequency nulls of the channel, it inherits some drawbacks from OFDMA. Frequency synchronization between transmitter and receiver in mobile environment and resulting performance degradation is one such issue especially in uplink communication. After the standardization of SCFDMA as uplink standard for LTE, frequency synchronization is an active area of research. In this paper SCFDMA system is analysed in the presence of CFO and the results of analysis is utilized in framing an efficient representation to the multidimensional frequency synchronization problem as effective ICI matrix and a method to jointly compensate effective ICI matrix and equalize the channel is proposed based on minimum mean square error criterion and its performance is compared with the existing schemes.

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SCFDMA通信系统中的有效ICI矩阵及其补偿

DFT扩展OFDMA，俗称单载波频分多址(SCFDMA)，是一种新兴的无线标准，由于其能够将单载波调制的优点与OFDMA相结合而受到了广泛的关注。尽管SCFDMA具有较低的峰值平均功率比(PAPR)和对信道频率零值的抵抗能力，但它继承了OFDMA的一些缺点。在移动通信环境中，发送端和接收端之间的频率同步以及由此导致的性能下降是其中一个问题，尤其是在上行通信中。在SCFDMA作为LTE上行链路标准标准化之后，频率同步是一个活跃的研究领域。本文对存在CFO的SCFDMA系统进行了分析，利用分析结果将多维频率同步问题有效地表示为有效ICI矩阵，提出了一种基于最小均方误差准则的有效ICI矩阵联合补偿和信道均衡的方法，并与现有方案进行了性能比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2015 7th International Conference on Communication Systems and Networks (COMSNETS)

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