一种降低MC-CDMA信号峰值平均功率比的方法 |
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| [摘要] |
| 多载波信号的峰值平均功率比远远大于单载波系统，而且峰平比随着子载波个数无限增长.本文采用格雷互补序列及它的一个子类S-R序列作为多载波CDMA（MC-CDMA）的扩频码，来降低它的输出峰值平均功率比，对于任意长度的扩频码其峰平比不超过6dB.对长度为32的S-R序列扩频、Hadamard扩频及长度为31的m序列扩频的MC-CDMA信号进行了比较，其峰平比分别为6dB,13.68dB和12dB. |
| [英文摘要] |
| The ratio of peak and average power in multi-carrier system is much larger than that in single carrier system,and may grow unboundedly as the number of subcarriers grows to infinity.By using Golay complementary sequences and S-R sequences as spreading codes,the crest factor is upper bounded by 6dB regardless of the length of the spreading code.We also present the crest factor of S-R,Hadamard and m sequences spreading MC-CDMA, which are 6dB,13.68dB and 12dB separately. |
| [关键词] |
| MC-CDMA；峰平比；格雷互补序列 |
| [作者] |
| 王艺 |
| [作者单位] |
| 北京邮电大学信息工程系 |
| [刊名] |
| 电子学报 |
| [英文刊名] |
| [期刊类别] |
| 无线电电子学与电信技术 |
| [年 卷 期] |
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1999 27 0 点击免费下载论文：一种降低MC-CDMA信号峰值平均功率比的方法 |