Power Adaptation in OFDM Systems Based on Velocity Variation Under Rapidly Time-Varying Channels

被引：9

作者：

Dong, Zhicheng ^{[1
,2
]}

Fan, Pingzhi ^{[1
]}

Lei, Xianfu ^{[1
]}

机构：

[1] Southwest Jiaotong Univ, Key Lab Informat Coding & Transmiss, Chengdu 610031, Peoples R China

[2] Tibet Univ, Sch Engn, Lhasa 850000, Peoples R China

来源：

IEEE COMMUNICATIONS LETTERS | 2015年 / 19卷 / 04期

基金：

美国国家科学基金会;

关键词：

Average spectral efficiency (ASE); intercarrier interference (ICI); orthogonal frequency division multiplexing (OFDM); rapidly time-varying channels; CONNECTIVITY;

D O I：

10.1109/LCOMM.2015.2396070

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

A novel power adaptation scheme, based on the terminal velocity instead of channel state information (CSI), in OFDM systems over rapidly time-varying channels, is proposed. Simulation results show that the proposed power adaptation scheme based on the velocity variation is effective for improving the performance of OFDM systems in fast fading channels.

引用

页码：689 / 692

页数：4

共 17 条

[1]

[Anonymous], 2004, ART H UNI PER COMMUN

[2]

Boyd S., 2004, CONVEX OPTIMIZATION, VFirst, DOI DOI 10.1017/CBO9780511804441

[3] On channel estimation and detection for multicarrier signals in fast and selective Rayleigh fading channels [J].

Choi, YS ;

Voltz, PJ ;

Cassara, FA .

IEEE TRANSACTIONS ON COMMUNICATIONS, 2001, 49 (08) :1375-1387

[4]

Chung ST, 2001, IEEE T COMMUN, V49, P1561, DOI 10.1109/26.950343

[5] Performance analysis of OFDM systems with adaptive sub carrier bandwidth [J].

Das, Suvra S. ;

De Carvalho, Elisabeth ;

Prasad, Rainjee .

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2008, 7 (04) :1117-1122

[6]

Dong Z., 2014, P IEEE INT COMMUN SY, P4042

[7] Conditional Power and Rate Adaptation for MQAM/OFDM Systems Under CFO With Perfect and Imperfect Channel Estimation Errors [J].

Dong, Zhicheng ;

Fan, Pingzhi ;

Panayirci, Erdal ;

Lei, Xianfu .

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 2015, 64 (11) :5042-5055

[8] Effect of power and rate adaptation on the spectral efficiency of MQAM/OFDM system under very fast fading channels [J].

Dong, Zhicheng ;

Fan, Pingzhi ;

Panayirci, Erdal ;

Mathiopoulos, P. Takis .

EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING, 2012,

[9] Variable-rate variable-power MQAM for fading channels [J].

Goldsmith, AJ ;

Chua, SG .

IEEE TRANSACTIONS ON COMMUNICATIONS, 1997, 45 (10) :1218-1230

[10] Seamless Wireless Connectivity for Multimedia Services in High Speed Trains [J].

Karimi, Ouldooz Baghban ;

Liu, Jiangchuan ;

Wang, Chonggang .

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 2012, 30 (04) :729-739

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