On Uplink Channel Estimation in WiMAx Systems

被引：0

作者：

Shen, Yushi ^{[1
,4
]}

Cosman, Pamela C. ^{[2
,5
,6
]}

Milstein, Laurence B. ^{[2
]}

Martinez, Eduardo F. ^{[3
,7
,8
,9
]}

机构：

[1] Microsoft Inc, Digital Media Div, Seattle, WA 98104 USA

[2] Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA

[3] Freescale Semicond Inc, Dept Syst Engn, Austin, TX 78721 USA

[4] MSIDC, Windows Media Developer Team, Hyderabad, Andhra Pradesh, India

[5] CWC, La Jolla, CA 92093 USA

[6] Sigma Xi, Morrisville, NC 27560 USA

[7] Freescale Semicond Inc, DSP, Austin, TX 78721 USA

[8] Motorola Inc, Syst & Applicat Engn Dept, Austin, TX 78721 USA

[9] Motorola Inc, Austin, TX 78721 USA

来源：

INTERNATIONAL JOURNAL OF MOBILE COMPUTING AND MULTIMEDIA COMMUNICATIONS | 2010年 / 2卷 / 02期

关键词：

4g Communications; Channel Estimation; OFDM; OFDMA; WiMAX;

D O I：

10.4018/jmcmc.2010040105

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

In this paper, channel estimation algorithms are proposed and compared for uplink WiMAX systems, which are OFDMA based. These algorithms are investigated based on a dynamic resource allocation scheme, and it is shown that each of them is suitable to specific system scenarios. For example, for a system with a bandwidth of 10MHz operating in the low frequency region (2-11GHz), a two-dimensional averaging algorithm outperforms other algorithms, such as a bilinear interpolation algorithm, because the correlations between the pilots and signals are sufficiently high in both the frequency and the time dimensions.

引用

页码：67 / 77

页数：11

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