摘要
基于减格矢量预编码的量化误差问题,提出了一种可调量化误差校正方法.通过大量仿真实验发现,在减格矢量预编码中量化误差数目的概率分布是有规律的,利用实际量化误差数目的概率分布规律,通过设定不同的调节值控制量化误差校正的数目,获得一种可调的误差校正方法.仿真表明,该方法在量化误差校正中,能够取得性能和复杂度的折衷.
A tunable quantization error correction method was proposed based on quantization errors problem of lattice reduction based vector precoding. It is found by a great deal of simulations that the probability distribution of the actual quantization error numbers is regular. By exploiting the regularity of the actual number of quantization errors, the controlling values can be set to control the quantization error numbers to be corrected. Thus the tunable quantization error correction is obtained. The simulation results show that the new method can achieve tradeoff between performance and complexity.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2009年第7期1155-1160,共6页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金项目(60772100)
上海市重大科技攻关项目(07dz15006)
关键词
多输入多输出
减格矢量预编码
可调量化误差校正
multiple-input multiple-output
lattice reduction based vector precoding
tunable quantization error correction
