LTE — Improving quality reception in downlink radio resources links

Abstract

The frequency reuse technique adopted in the LTE (long term evolution) target a high bitrate and QoS but is hampered by the significant increase of the number of users. In this work, to improve the downlink radio link, we will use, in the inner-cell, the frequency reuse and LP-OFDM modulation. In the cell-edge we will use the frequency reuse and OFDM modulation supported by the coordination with adjacent cells. Matlab simulation of different scenarios showed an improvement in bit error rate at the receiver. As a result For inner-cell the use of LP-OFDM with iterative receiver, results in an increase of gain of about 2 dB for SNR (Signal to Noise Ratio) higher than 3 dB. For the cell-edge, combining multiple physical resources, improves significantly the transmission conditions with a gain of 3 dB with 2 PRB (physical resource block) and a gain greater than 6 dB with 3 PRB allocations. The results are processed according to the Monte Carlo criteria.