Carrier Frequency Offset Estimation in MIMO-OFDM Systems Based on Pilots Design

XIE Yu-tang; YAO Yao

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Carrier Frequency Offset Estimation in MIMO-OFDM Systems Based on Pilots Design

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- Carrier Frequency Offset Estimation in MIMO-OFDM Systems Based on Pilots Design
- Acta Electronica Sinica Vol. 34, Issue 1, Pages: 110-113(2006)
- 作者机构：
  
  1. 中国科学技术大学,安徽,合肥,230027
  2. 中兴通讯上海研发中心,上海,201203
  3. 中国科学技术大学安徽合肥,230027
  4. 中兴通讯上海研发中心上海,201203
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN929.53
- Published：2006
- 稿件说明：
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XIE Yu-tang, YAO Yao. Carrier Frequency Offset Estimation in MIMO-OFDM Systems Based on Pilots Design[J]. Acta Electronica Sinica, 2006, 34(1): 110-113.
DOI：

XIE Yu-tang, YAO Yao. Carrier Frequency Offset Estimation in MIMO-OFDM Systems Based on Pilots Design[J]. Acta Electronica Sinica, 2006, 34(1): 110-113. DOI：

摘要

在多输入多输出-正交频分复用(MIMO-OFDM)系统中载频同步是个关键问题.考虑在该类系统中

存在着多个不同的载波频偏这个具有普遍适应性的模型

为了估计多个不同的频偏

提出了一种导频设计方案－子波段方法

将多个频偏的估计问题转换为一组单个频偏估计问题

从而降低了复杂度

同时可以有效地抑制载波间干扰和天线间干扰

提高载波频偏估计性能.

Abstract

The problems of carrier synchronization in MIMO-OFDM communications system are investigated in the paper.Based on a general model where multiple frequency offsets exist between transmit and receive antennas

a special pilot allocation scheme-sub-band method for the estimation of multiple different frequency offsets is proposed to convert the problem of multiple frequency offsets estimation into a set of single frequency offset estimation problems

which can reduce the complexity.Meanwhile this method is effective in suppressing the inter-carrier interference (ICI) and multi-antenna interference (MAI) and therefore improves the estimation performance.

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