| 摘要: |
| 针对OFDM训练符号同步算法中存在的大采样数据而导致捕获时间过长的问题。提出了一种多符号改进算法。该算法应用对多个符号等间隔取样并共轭相乘累加的方法，在采用小数目的采样数据时就可以取得较好的性能，同时缩短了定时捕获时间，克服了原来算法中存在的问题。最后，仿真表明该算法的有效性。 |
| 关键词: 正交频分复用 定时同步算法 多符号改进算法 |
| DOI：10.3969/j.issn.1001-893X. |
| 投稿时间：2006-03-01修订日期：2006-07-10 |
| 基金项目:国家自然科学基金 |
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| A Modified Multi-symbol Algorithm for OFDM System |
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| Abstract: |
| The rained-symbol timing synchronization algorithm of the presented OFDM needs too long capturing time.Aiming at this problem,a modified multi-symbol algorithm is presented.This algorithm is applied to average-interval sampling from multi-symbol,conjugating,multiplying and accumulating.And it can make a better performance and shorten timing capture only using fewer sample data.What's more,it overcomes the shortcomings of the original algorithm.Simulation result exhibits the effectiveness of this algorithm. |
| Key words: OFDM timing synchronization method modified multi - symbol algorithm |
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