| With the rapid development of the mobile Internet and rapid growth in mobile data,the fourth-generation mobile communication-LTE-Advanced began to rise. In order tosolve the interference of inter-cell, Coordinated Multiple Points-CoMP is applied toLTE-Advanced. CoMP suppresses the interference between cells by coordinatedscheduling or joint processing. The joint-processing precoding technology of CoMP wasstudied in this paper, the main research achievements are as follows:Traditional inter-cell interference suppression techniques,such as interferencerandomization, interference cancellation and interference coordination was introducedin this paper,CoMP was found to be a better interference cancellation technique bycomparing the advantages and disadvantages of them. The selection of CoMPcollaborative clusters, CoMP scenarios, CoMP transmission scheme and CoMPfeedback scheme were studied in this paper.The precoding technique of SU-JP and MU-JP was researched in this paper. Found,SU-JP reducing the BER of target user at the expense of reducing the System spectralefficiency. It’s suitable for the scenario, which less demanding for system spectralefficiency but high demanding for user’s BER. MU-JP is good performance inimproving target user’ BER and system spectral efficiency, but its algorithm complexityis higher than SU-JP. In order to evaluate and verificate the performance of JP CoMP,the LTE-A system simulation platform ande physical layer link simulation platform wasbuilt according to the scenario assumptions in3GPP TR36.814.To further evaluate the complexity of precoding algorithm for hardwareimplementation and the feasibility of Network deployment, the Freescale MSC8156,which designed for the fourth communication was used for buiding the hardwaresimulation platform. What’s more, this platform ensures real-time communication byconsidering DSP software optimization and multi-core pipeline processing. The fastperformance Verify the feasibility of CoMP Network deployment. |
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