Asynchronous cooperative transmission scheme using linear dispersion code

作者：Gao Ming; Ge Jianhua; Han Chunlei; Chi Kaikai^*

来源：High Technology Letters, 2010, 16(2): 138-142.

DOI：10.3772/j.issn.1006-6748.2010.02.005

• Asynchronization
• Channel matrices
• Co-operative diversity
• Code-words
• Cooperative diversity scheme
• Cooperative transmission
• Decoding methods
• Linear dispersion
• Linear dispersion codes
• Relative timing
• Virtual antenna arrays
• Wireless channel
• Zero padding

The cooperative diversity schemes can effectively create a virtual antenna array for combating multi-path fading in wireless channels. However, a lot of cooperative diversity schemes require perfect synchronization which is, in practice, difficult and even impossible to be realized. In this paper, we propose an asynchronous cooperative diversity scheme based on the linear dispersion code (LDC). By adding the zero padding (ZP) between linear dispersion codewords, our scheme mitigates the effect of a synchronism effectively. The length of ZP is decided by relative timing errors between different relays. Besides, an easy decoding method of our scheme is given in this paper by restructuring the stacked channel matrix.

• 出版日期2010
• 单位西安电子科技大学