关键词: 协作多点传输, 信道码本化, 干扰消除, 空间基

Abstract:

The accuracy of the feedback codebook is a key factor for coordinated multi-point transmission/reception (CoMP). A new method of codebook evaluation based on space basis vectors and a method of codebook reconstruction with several preferred space basis vectors are proposed. Furthermore, the residual interference is discussed and its key influencing factors is deduced. Base on the above, this article proposes a new CoMP approach to do further interference cancellation. Simulation shows that, compared to the traditional methods, the new method has better performance in interference cancellation with advantages such as unnecessary to update codebook, flexible trade-off between feedback overhead and interference cancellation effect and good scalability.

Key words: coordinated multi-point transmission/reception, channel codebook, interference cancellation, base vector