Research Article Open Access

Downlink Capacity Improvement for LTE Using Multi-Cell MIMO during Handover

Abstract

In today’s world the high data speed mobile users are increasing day by day in 4G-LTE networks, as number of mobile user increases we need to serve all the mobile users with the same Quality of Service (QoS) and data rate in all region of the cell coverage area. In this project, the Variable Step Size Griffiths (VSSG) Algorithm is implemented which is responsible for steering the radiation pattern of the eNodeB with Multiple Input Multiple output (MIMO)antenna’s from -90 degree to +90 degree. After steering the main beam, the detection is performed using MUSIC algorithm which detects the UE’s located at cell boundaries during handover to provide better signal strength to meet the standards QoS of 4G-LTE. The radiation pattern is analysed for the various cases like, Less Antenna Elements & Single Jammer, Less Antenna Elements and Multiple Jammers, More Antenna Elements and Single Jammer and finally More Antenna Elements and Multiple Jammers.VSSG will have the lowest Mean square error convergence as compared to Leaky Least Mean Square Algorithm (LLMS), and Griffiths Algorithm. Finally the Capacity of Single input single output (SISO) and Multiple Input Multiple output (MIMO) are also compared and proved that the 4G-LTE (using MIMO-VSSG) has the better capacity as compared to other algorithms.

Megha.B, Lalitha.Y.S

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