在移动通信不断发展的过程中，ITU提出了IMT系统性指标，3GPP提出了LTE-Advanced技术。由于小区间的干扰比较严重，目前已经有的干扰协调技术是无法解决小区边缘用户频率利用率低这个问题，于是在LTE-Advanced中人们引入了协同多点传输和接收（Coordlinated Multi-Point transmission/reception, CoMP），采用这种技术来解决这个问题。协同多点传输和接收技术是通过多个小区间的联合调度或者协作传输，对于相邻小区的干扰可以大幅度的降低，这样就可以提高接收用户设备的接收信号性能，而且可以大幅并且有效的提高边缘用户的频谱效率。 本论文主要是对于Comp中的联合处理（Joint Processing , JP）进行研究，以这个联合处理方案为基础，进行系统级仿真，并且对于Comp JP性能及其方案进行评估验证和研究。本论文主要包括以下几个方面： 1)依据3GPP标准所提出的会议提案以及系统平台的仿真方法，本论文设计并且搭建了Comp JP的系统仿真平台。这个仿真平台包括：多小区空间信道的数学建模，确定联合处理小区集合和协同用户，单用户和多用户的预编码，多小区干扰计算以及终端接收机等模块，在这个仿真平台下，验证了单用户JP。 2)在基站完全了解信道状态的理想情况下，研究了线性信道的三种预编码方案，分别是奇异值（SVD）分解，几何均值（GMD）分解，统一均值（UCD）分解，并且对这三种编码方式进行了推导，对三种预编码条件下的MIMO信噪比和接收误码率做出了仿真。同时结合UCD的块对角化的协作传输预编码进行了分析，块对角化可以大幅度的降低干扰，并且计算方法简单易行。 3)根据上述对于协作小区建模，预编码以及调度。并且对于不同族的划分的结果从公司的实际测试中结果做出了分析。然后在理想条件下搭建了系统平台，评估了单用户协作传输，比较了在非协作情况下与2小区协作，3小区协作传输情况下的边缘用户性能的提升与整体性能之间的关系。

With the development in the mobile communications process, ITU proposed IMT system performance indicators proposed.3GPP proposed LTE-Advanced technical.. As the more serious inter-cell interference, at present, interference coordination techniques can not solve the cell edge users using low frequency of this problem. so people let the introduction of multi-point transmission and reception coordination in the LTE-Advanced. This technology has been to solve this problem. Coordinated multi-point transmission and reception technologies through multiple inter-cell coordination or joint operation of transmission. For the adjacent cell interference can be reduced significantly and can improve the quality of the received signal receiver users. This technology can dramatically and effectively improve the system capacity and edge user spectral efficiency. This paper is mainly for the joint processing in the Comp technologies, with this technology as basis. Simulate the system-level simulation. We study this Comp program and its performance evaluation and validation. This paper includes the following aspects: 1. In this paper we design and build a system simulation platform Comp JP, according to the 3GPP standard conference proposals and system simulation methods. These include multi-residential space channel modeling and collaborative community of users and set co-determination, precoding , interference calculations and terminal receiver modules. In this simulation platform we verify single-user JP and multiple-users JP and their performance. 2. In the ideal base to understand the case of channel, this paper studies of three pre-coding scheme, they are SVD, GMD and UCD value decomposition, this paper also deduced this encoding. make the simulation three kinds of pre-coding under the different signal to noise ratio and error rate. block diagonalization can significantly reduce the interference and its calculate is simple. Send and receive joint precoding method calculate the precoding matrix and precoding matrix and receiver equalization with the iterative. Though diagonal block in the program can not solve the case, it can still achieve significant BER performance and can adapt to higher channel correlation. 3. Under the base station can be fully aware of the channel state information conditions, this paper preliminary make the simulation platform and algorithms based on collaborative cell modeling precoding, dispatch .at the same time analysics three kinds of physical channels layer merge. Assess the transmission performance of singl-user cooperative. Compare three kinds of transmission performance, they are non-com two cells collaborative and three cells collaborative. Get the result the relationship between the edge user performance improvements and overall performance.