一种新的OFDM系统载波频率捕获算法
A New Carrier Frequency Acquisition Algorithm for OFDM Systems
-
摘要: 该文从OFDM信号的特性出发，采用单一训练帧，将OFDM系统的载波频率捕获等效为单载波频差估计。该文提出的算法仅使用一帧辅助数据；具有较高的精度，较少的计算量和较大的捕获范围；且不受多径信道，时偏及帧同步误差的影响。
-
关键词:
- 正交频分复用;多载波;载波同步;捕获
Abstract: Based on the property of OFDM signal, a new carrier frequency acquisition algorithm is proposed, which employs only one block of identical time-domain training sym-bols. The proposed algorithm has good precision, low computations and large acquisition range. It is intrinsically robust to multipath channel and timing error. -
Bingham J A C.Multicarrier modulation for data transmission:an idea whose time has come[J].IEEE Commun.Mag.1990,28(5):5-14[2]Sari H,Karam G,Jeanclaude Ⅰ.Transmission techniques for digital terrestrial TV broadcasting.IEEE Commun.Mag.,1995,33(2):100-109.[3]Zou W Y,Wu Y.COFDM:an overview[J].IEEE Trans.on Broadcasting.1995,41(1):1-8[4]Pollet T,Bladel M,Moeneclaey M.BER sensitivity of OFDM systems to carrier frequency offset and Wiener phase noise.IEEE Trans.on Commun.,1995,COM-43(2/3/4):191-193.[5]Wei L,Schlegel C.Synchronization requirements for multi-user OFDM on satellite and two-path Rayleigh fading channels.IEEE Trans.on Commun.,1995,COM-43(2/3/4):887-895.[6]Luise M,Reggiannini R.Carrier frequency acquisition and tracking for OFDM systems.IEEE Trans.on Commun.,1996,COM-44(11):1590-1598.[7]Yun Hee Kim,Iickho Song,Seokho Yoon.An efficient frequency offset estimator for OFDM systems and its performance characteristics[J].IEEE Trans.on Vehicular Technology.2001,50(5):1307-1312[8]Dong-Seog Han,Jae-Hyun Seo,Jung-Jin Kim.Fast carrier frequency offset compensation in OFDM systems[J].IEEE Trans.on Consumer Electronics.2001,47(3):364-369[9]Morelli M,Mengali U.An improved frequency offset estimator for OFDM applications[J].IEEE Communications Letters.1999,3(3):75-77 -
计量
- 文章访问数: 2267
- HTML全文浏览量: 101
- PDF下载量: 681
- 被引次数: 0
下载:
