摘要
为有效克服多输入多输出(MIMO)中多发送天线引入的空间干扰,结合Turbo编码提出了一种新的、高效的接收机方案.该方案修正了Turbo软迭代译码算法,同步进行干扰检测和Turbo译码,从信息论的角度可以更充分地利用接收的信息.多接收天线可以对判决似然比和迭代译码的外部信息提供分集增益,进一步提高系统性能.该方案克服了传统的空时技术,比如空时分组码(STBC)和空时层处理(BLAST)的发送天线、发送时隙以及接收天线间的约束限制.从系统性能和迭代参数两方面进行仿真证实了算法的有效性.
A novel and effective receiver scheme is presented with Turbo-code in order to effectively overcome the space interference induced by multi-antenna MIMO system. By modifying the conventional Turbo iterative decoding algorithm, new scheme synchronizes the interference detector with Turbo decoder, which can fully utilize original received information from the point of view of information theory. Multi-receive antennas can also provide the diversity gain for LLR information and iterative extrinsic information. The scheme breaks the restriction of space and time domain of space-time block code （STBC） and bell laboratories layered space-time （BLAST）. Simulation results verify the validity of the scheme from system performance and iterative parameters.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2006年第3期7-11,16,共6页
Journal of Beijing University of Posts and Telecommunications
基金
国家"863计划"项目(2003AA12331004)
国家自然科学基金项目(60472070)
