SPECTRAL EFFICIENCY MAXIMIZATION IN MISO-OFDM SYSTEMS USING RATE ADAPTIVE BIT LOADING AND TRANSMIT ANTENNA SELECTION TECHNIQUES

A high spectral efficient system is expected to meet the growing demands of multimedia applications through a wireless medium. In this paper, a low complex high spectral efficient Reduced Multiple Input Single Output (R-MISO)-Orthogonal Frequency Division Multiplexing (OFDM) system is proposed. The proposed system exploits the benefits of Rate Adaptive Bit Loading (RABL), Transmit Antenna Selection (TAS) and Space Frequency Block Codes (SFBC) to get high spectral efficiency through a constrained available spectrum. The performance of the proposed system with different configurations of R-MISO is analyzed with the average Signal to Noise Ratio (SNR) gain, Bit Error Rate (BER), outage probability, spectral efficiency and data rate. The performance of the proposed system has greatly enhanced by utilizing TAS and RABL techniques. The obtained simulation results validate this statement