Performance Analysis of Channel Condition & Channel Model of LTE in various Transmission Mode

Abstract

Advancements in mobile communication techniques have helped in introducing various new wireless applications. This has caused an increase in the demand of capacity and performance. Long Term Evolution (LTE) addresses such demands. It exploits Orthogonal Frequency Division Multiplexing (OFDM) for down link as a digital modulation technique base don dividing the transmission bandwidth into smaller sub carriers. Receive diversity at the mobile,Transmit diversity using SFBC at the eNB (evolved Node B), MIMO spatial multiplexing at theeNB, for one or two users etc -antenna techniques have been defined for LTE to improve thedownlink performance. According to LTE Release 9 there are 7 MIMO configurations from mode 2 to 8. An LTE base station is expected to select and switch among these transmission modes based on channel quality feedback like Channel Quality Indicator (CQI).In this paper we have investigated the effect of different channel conditions at different SNR levels on the performance achieved through transmission mode 1 to 4 in both Pedestrian Mode & Vehicular Mode . The simulation output shows that the mode 2,3 and 4 which are transmit diversity, open loop and close loop spatial multiplexing respectively using 4 transmitting antenna outperforms all other mode in terms of high throughput at very reasonable BLER. And this paper is a guideline for the countries, like Bangladesh, who are stepping forward for 4G LTE Network Establishment.