CAJ | 학술논문

为了提高小区边缘用户的性能,满足小区边缘频谱效率的要求,LTE- Advanced系统中引入了协作多点传输技术( CoMP,Coordinated Multi- Point transmission)。提出一种新的下行协作方案,该算法首先判定网络中的用户类型,其次为小区边缘用户选择协作集合。此方案利用信干噪比( SINR, Signal- to- Interference plus Noise Ratio)阈值自适应的确定协作小区的数量,能有效避免不必要的协作,能降低系统的信息传输负担。仿真结果表明,提出的算法相比已经存在的算法能够明显改善协作效率同时能够降低基站间的信息传输负担。
위료제고소구변연용호적성능,만족소구변연빈보효솔적요구,LTE- Advanced계통중인입료협작다점전수기술( CoMP,Coordinated Multi- Point transmission)。제출일충신적하행협작방안,해산법수선판정망락중적용호류형,기차위소구변연용호선택협작집합。차방안이용신간조비( SINR, Signal- to- Interference plus Noise Ratio)역치자괄응적학정협작소구적수량,능유효피면불필요적협작,능강저계통적신식전수부담。방진결과표명,제출적산법상비이경존재적산법능구명현개선협작효솔동시능구강저기참간적신식전수부담。
In order to improve the performance of the cell-edge use rand meet the requirement of cell-edge spectral efficiency, CoMP ( Coordinated Multi-Point) transmission technology is introduced in the LTE-Advanced system. This paper proposes a novel downlink coordinative algorithm, which could firstly deter-mine the type of network users, and then select a cooperation set for the cell-edge users. This algorithm, with SINR ( Signal-to- Interference plus Noise Ratio) threshold for adaptive determination of cooperative-cell number, could effectively avoid the unnecessary cooperation and reduce information transmission bur-den of the system. Simulation results show that compared with the existing schemes, the proposed scheme could significantly raise the cooperative efficiency and reduce the information transmission burden of be-tween the base stations of coordination.