上校
- 注册时间
- 2003-6-2
- 金币
- 14049 个
- 威望
- 1 个
- 荣誉
- 0 个
尚未签到
|
发表于 2006-6-27 19:46
<P>本文专题:<A title="《2006年6月专题索引——OFDM与MIMO技术》<br>作者:tange<br>发表于:2006-6-7 10:48:54<br>最后发贴:本期资料较多,..." href="http://forum.anywlan.com/dispbbs.asp?boardID=2&ID=2418&page=1" target=_blank><FONT color=#000000>2006年6月专题索引——OFDM与MIMO技术</FONT></A></P>
<P> <STRONG>Abstract</STRONG>—This paper proposes an accurate and time-efficient technique for frequency synchronization of multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems. The technique uses a preamble and is thus especially suitable for burst mode communication. The preamble consists of training sequences simultaneously transmitted from the various transmit antennas. From analysis, it is shown that the accuracy of frequency synchronization is close to the Cram´er-Rao lower bound and increases for increasing rms delay spreads and number of receive antennas. Furthermore, application of the proposed algorithm in MIMO OFDM wireless<BR>local-area-network (WLAN) systems leads to a BER that is only slightly higher than that of a perfectly synchronized system, making it highly applicable.</P> |
|