|
|||||
|
|
| 多径衰落信道中分组空时编码OFDM传输方案 | |
| 引用本文： | 孙晓云,李蓓,熊艳平,郑棋. 多径衰落信道中分组空时编码OFDM传输方案[J]. 西安科技大学学报, 2007, 27(3): 431-434,484 |
| 作者姓名： | 孙晓云 李蓓 熊艳平 郑棋 |
| 作者单位： | 1. 西安科技大学,通信与信息工程学院,陕西,西安,710054 2. 西安大唐电信公司,陕西,西安,710054 3. 西安电子科技大学,理学院,陕西,西安,710071 4. 西安科技大学,电气与控制工程学院,陕西,西安,710054 |
| 摘 要： | 提出了一种分组空时编码OFDM传输方案。发射端对发射天线进行分组,对于每个分组进行独立的空时编码,而利用不同用户的子载波选择矩阵相互正交进行分组干扰抑制,接收端对每一分组的空时码进行空时分组码的传统解码。在发射天线数较大时,该方案不但可以获得高于传统空时编码的频谱利用率和码速率,而且相对于其他文献中的分组干扰抑制方法,该方案只需用一个接收天线,降低了系统接收机设计的复杂度。仿真结果验证了这一方案的有效性。 |
| 关 键 词： | 多径衰落 |
| 文章编号： | 1672-9315（2007）03-0431-04 |
| 修稿时间： | 2006-05-20 |
Grouping space time coding OFDM transmission scheme for multipath fading channel |
|
| SUN Xiao-yun,LI Bei,XIONG Yan-ping,ZHENG Qi. Grouping space time coding OFDM transmission scheme for multipath fading channel[J]. JOurnal of XI’an University of Science and Technology, 2007, 27(3): 431-434,484 | |
| Authors: | SUN Xiao-yun LI Bei XIONG Yan-ping ZHENG Qi |
| Abstract: | An OFDM transmission scheme based on groping space-time coding is proposed.For the transmitter,the transmit antennas are divided into subgroups and each of them is encoded by individual space-time block code,the group interferences suppression is taken by means of mutual orthogonality between subcarrier selection matrixes of different users.For the receiver,the traditional decoding method for space-time block code is used for each subgroup.With a large number of transmitter antennas,the new method only need one receiver antenna,which greatly reduce the complexity of receiver related to that in and for group interferences suppression.Simulation results confirm the validity of the proposed method. |
| Keywords: | OFDM STBC |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |