Research And Performance Analysis On Enhanced LTE-A Technology

Along with the development of data rate and the stronger desire for data business extension,3GPPLTE/LTE-Advanced was represented and promoted by international standardization organization as the Fourth Generation mobile communication (4G) systems. Among its standardization progress, the Multiple-Input Multiple-Output (MIMO), Coordinated Multipoint Processing (CoMP), New Carrier Type (NCT) and some other technologies were accepted as a number of key technologies for IMT-Advanced. On the other hand, in the standard-setting process of3GPPLTE-Advanced Releasell, the technologies are still viewed as the above-mentioned key elements engaged in a lively discussion. Standing on the basis of enterprises cooperation project, National Natural Science Foundation, The author followed LTE-A standardization progress, combining LTE-based theoretical framework to complete the study the on enhanced new technologies on LTE-A,as well prove its performance from physical-level and system-level simulations.This paper focuses on the analysis and simulation of three technical points, four aspects:1)A Multi-antenna Multi-user feedback scheduling enhanced and downlink multiple-antenna multi-user feedback enhancement mode design, which utilizes the uplink feedback information including PMI (Precoding Matrix Indicator), CQI (Channel Quality Indicator) feedback information as basis information for base station downlink scheduling, by an order of magnitude enhancement and system-level simulation to prove the enhancement of throughput;2) Multi-antenna transmission feedback is proposed to enhance CoMP case throughput. The author designed an enhanced feedback mechanism to reflect the situation in the CoMP channel conditions (such as the use of polymeric CQI feedback to indicate the channel quality conditions in the CoMP) and different the program structure network performance gain for further simulation analysis;3) Under a heterogeneous network based on the users’business type and channel quality, the base station determines the type and distribution of the new carrier program; the author will introduce the program content and the next proposed improvement plan.Finally, the author will summary the above types of designs, analysis the advantages and disadvantages and prospects for the next step.