摘要
提出了一种加入正交扩频序列的空时分组码,在空时分组码的基本结构上引入了正交扩频序列,并给出了不需要估计信道的直接译码系统.该直接译码算法结合扩频序列的正交性和空时编码的正交结构,利用接收信号的噪声子空间,无需信道信息便可直接实现译码.仿真结果表明,该方法具有良好的误码率和误比特率性能.
This paper presents a new space-time block code, which introduces orthngonal spreading sequences to the basic structure of the space-time block code, and a blind decoding system, which carries out the decoding without the estimation of the channel. Combined with the orthngonal character of spreading sequences and the orthogenal structure of space-time block code, the noise subspace of the received signal are exploited to achieve the decoding without a knowledge of the channel. Simulation results show that the new space-time block code has good performance at the word error rate （WER） and the bit error ratge（BER）.
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
2005年第4期611-615,共5页
Journal of Xidian University
基金
国家自然科学基金资助项目(60172028)
高等学校博士学科点专项基金资助项目(20010707008)
关键词
空时分组码
正交扩频序列
子空间方法
盲译码
space-time block code
orthogonal spreading sequence
subspace method
blind decoding
