A Study on Improve Performance in the Next-generation Broadband Wireless Communication Systems

提高下一代宽带无线通信系统性能的研究

基本信息

  • 批准号:
    21560407
  • 负责人:
  • 金额:
    $ 2.91万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 财政年份:
    2009
  • 资助国家:
    日本
  • 起止时间:
    2009 至 2011
  • 项目状态:
    已结题

项目摘要

Orthogonal frequency division multiplexing(OFDM) has been adopted in many wireless communication systems. OFDM is known for its sensitivity to carrier frequency offset(CFO). Since the CFO destroys the orthogonality among subcarriers, the resulting inter-carrier interference(ICI) leads to severe performance degradation.On the other hand, direct-conversion receiver(DCR) has attracted a lot of attention in recent years, for its smaller size and lower cost. However, the price is the additional disturbances, such as DC offset(DCO), I/Q imbalance. Obviously, the coexistence of the CFO and DCO is a critical problem in an OFDM DCR. In order to improve bit error ratio performance in the presence of analog impairments, a novel joint estimated method of CFO, DCO and I/Q imbalance were proposed.
正交频分复用(OFDM)技术已经被广泛应用于无线通信系统中。OFDM因其对载波频率偏移(CFO)的敏感性而闻名。由于CFO破坏了子载波间的正交性,导致子载波间干扰(ICI),严重影响了系统的性能。另一方面,直接变频接收机(DCR)以其体积小、成本低等优点,近年来受到了广泛的关注。然而,代价是额外的干扰,如直流偏移(DCO),I/Q不平衡。显然,CFO和DCO的共存是OFDM DCR中的关键问题。为了改善模拟损伤情况下的误比特率性能,提出了一种新的CFO、DCO和I/Q不平衡联合估计方法。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Low-complexity pilot-aided compensation for carrier frequency offset and I/Q imbalance
  • DOI:
    10.1109/tcomm.2010.02.070505
  • 发表时间:
    2010-02
  • 期刊:
  • 影响因子:
    8.3
  • 作者:
    Hai-Hsing Lin;Xu Zhu;K. Yamashita
  • 通讯作者:
    Hai-Hsing Lin;Xu Zhu;K. Yamashita
Frequency offset estimation in the presence of I/Q imbalance and time-varying DC offset
存在 I/Q 不平衡和时变 DC 偏移的情况下的频率偏移估计
  • DOI:
  • 发表时间:
    2009
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Kengo Kawasaki;Takayuki Tanaka;Masayoshi Aikawa;U.Yunus
  • 通讯作者:
    U.Yunus
Frequency offset and I/Q imbalance estimation for orthogonal frequency division multiplexing based wireless local area networks
基于正交频分复用的无线局域网的频率偏移和I/Q不平衡估计
  • DOI:
  • 发表时间:
    2012
  • 期刊:
  • 影响因子:
    0
  • 作者:
    H.Lin;T.Onishi;R.Kume;K.Yamashita
  • 通讯作者:
    K.Yamashita
Robust Frequency Offset Estimation in the Presence of Time-Varying DC Offset
  • DOI:
    10.1587/transcom.e92.b.2577
  • 发表时间:
    2009-08
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Umut Yunus;Hai-Hsing Lin;K. Yamashita
  • 通讯作者:
    Umut Yunus;Hai-Hsing Lin;K. Yamashita
Blind frequency-dependent I/Q imbalance compensation using system identification
使用系统识别进行与频率相关的 I/Q 不平衡盲补偿
  • DOI:
  • 发表时间:
    2012
  • 期刊:
  • 影响因子:
    0
  • 作者:
    H.Lin;and K.Yamashita
  • 通讯作者:
    and K.Yamashita
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YAMASHITA Katsumi其他文献

YAMASHITA Katsumi的其他文献

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{{ truncateString('YAMASHITA Katsumi', 18)}}的其他基金

A stady Redacing the Peak-to-Average Power Ratio and Ihter Carrer, In terference for MB-OFDM Based VWB Communication Sqstems
基于MB-OFDM的VWB通信系统的峰均功率比和Ihter Carrer干扰的研究
  • 批准号:
    18560381
  • 财政年份:
    2006
  • 资助金额:
    $ 2.91万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
A Newral Network for reducing the Peak-to-Average Power Ratio in Orthogonal Frequency-Division Multiplexing Systems
降低正交频分复用系统峰均功率比的Newral网络
  • 批准号:
    15560332
  • 财政年份:
    2003
  • 资助金额:
    $ 2.91万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
A Design Method of Spatial and Temporal Echo Cannceler Using Correlation Algorithm
一种基于相关算法的时空回声消除器设计方法
  • 批准号:
    13650420
  • 财政年份:
    2001
  • 资助金额:
    $ 2.91万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Image Signal Processing Using Adaptive Volterra Filter with Lattice Structure
使用具有格子结构的自适应 Volterra 滤波器进行图像信号处理
  • 批准号:
    10650373
  • 财政年份:
    1998
  • 资助金额:
    $ 2.91万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
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