An Improved Preamble-based SNR Estimation Algorithm for OFDM Systems

被引：9
|
作者：
Zivkovic, Milan [1 ]
Mathar, Rudolf [1 ]
机构：
[1] Rhein Westfal TH Aachen, Inst Theoret Informat Technol, D-52056 Aachen, Germany
来源：
2010 IEEE 21ST INTERNATIONAL SYMPOSIUM ON PERSONAL INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC) | 2010年
关键词：
CHANNEL;
D O I：
10.1109/PIMRC.2010.5671916
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：
A crucial parameter required for adaptive transmission in orthogonal frequency division multiplexing (OFDM) systems is the signal-to-noise ratio (SNR). In this paper, certain modifications to previously proposed preamble-based SNR estimator for wireless OFDM systems are suggested in order to improve estimation performance. Proposed modifications, related to DFT interpolation, are based on the adaptive selection of significant channel impulse response (CIR) paths utilizing the average noise power estimate obtained in frequency domain. The modified estimator shows performance improvement of average SNR estimation in low SNR regime and considerably outperforms original algorithm for SNR per subcarrier estimation.
引用
收藏
页码：172 / 176
页数：5
相关论文
共 50 条
  • [1] Preamble-based SNR Estimation Algorithm for Wireless MIMO OFDM Systems
    Zivkovic, Milan
    Mathar, Rudolf
    [J]. 2009 6TH INTERNATIONAL SYMPOSIUM ON WIRELESS COMMUNICATION SYSTEMS (ISWCS 2009), 2009, : 96 - 100
  • [2] Preamble-based SNR Estimation in Frequency Selective Channels for Wireless OFDM Systems
    Zivkovic, Milan
    Mathar, Rudolf
    [J]. 2009 IEEE VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-5, 2009, : 1462 - 1466
  • [3] SNR estimation algorithm based on the preamble for wireless OFDM systems
    REN GuangLiang
    [J]. Science China(Information Sciences), 2008, (07) : 965 - 974
  • [4] SNR estimation algorithm based on the preamble for wireless OFDM systems
    Ren GuangLiang
    Chang YiLin
    Zhang HuiNing
    [J]. SCIENCE IN CHINA SERIES F-INFORMATION SCIENCES, 2008, 51 (07): : 965 - 974
  • [5] SNR estimation algorithm based on the preamble for wireless OFDM systems
    GuangLiang Ren
    YiLin Chang
    HuiNing Zhang
    [J]. Science in China Series F: Information Sciences, 2008, 51 : 965 - 974
  • [6] Performance Analysis of a New Preamble-Based SNR Estimation Algorithm
    Seo, Changwoo
    Cho, Insik
    Portugal, Sherlie
    Park, Jaeho
    Park, Gihwan
    Jung, Taejin
    Hwang, Intae
    Liu, Huaping
    You, Cheolwoo
    [J]. IEICE TRANSACTIONS ON COMMUNICATIONS, 2011, E94B (05) : 1498 - 1501
  • [7] Time-Domain Preamble-Based SNR Estimation for OFDM Systems in Doubly Selective Channels
    Yang, Fan
    Zhang, Xi
    Zhang, Zhong-pei
    [J]. 2012 IEEE MILITARY COMMUNICATIONS CONFERENCE (MILCOM 2012), 2012,
  • [8] ON PREAMBLE-BASED CHANNEL ESTIMATION IN OFDM/OQAM SYSTEMS
    Katselis, Dimitrios
    Bengtsson, Mats
    Rojas, Cristian R.
    Hjalmarsson, Hakan
    Kofidis, Eleftherios
    [J]. 19TH EUROPEAN SIGNAL PROCESSING CONFERENCE (EUSIPCO-2011), 2011, : 1618 - 1622
  • [9] Proposal and Performance Analysis of a Novel Preamble-based SNR Estimation Algorithm
    Malik, Saransh
    Portugal, Sherlie
    Seo, Changwoo
    Kim, Cheolsung
    Hwang, Intae
    [J]. 2011 34TH INTERNATIONAL CONFERENCE ON TELECOMMUNICATIONS AND SIGNAL PROCESSING (TSP), 2011, : 100 - 103
  • [10] Preamble-based symbol timing estimation for wireless OFDM systems
    Gadhiok, Manik
    Cavallaro, Joseph R.
    [J]. CONFERENCE RECORD OF THE FORTY-FIRST ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS & COMPUTERS, VOLS 1-5, 2007, : 1791 - 1794
12345