Bit Error Rate analysis of efficient wireless channels in WiMAX for an image transmission using concatenated RS-LDPC coding techniques

Abstract: Wireless technologies offer significant benefits over wired, such as including low installation cost, rapid deployment, and mobility and so on. Wireless technologies are suitable for remote end applications. It is a challenging task to successfully transmit an image to the receiver with a very low bit error rate (BER) because of the presence of the noise in wireless channels. According to the user needs such as requirement of smaller bandwidth, high data rates, the wireless communication has undergone through the significant developments. In order to overcome the limitations of current technologies such as the presence of Inter Symbol Interference (ISI), multipath fading, availability of scarce resources, use of more efficient wireless systems is necessary. WiMAX is the most promising and upcoming 4G wireless transmission technologies that fulfil the user needs. Application of concatenated Reed Solomon-Low density Parity Check (RS-LDPC) codes with the WiMAX system ensures the reliability and efficiency of the system. This paper analyses the WiMAX system performance under various channel scenarios (Additive White Gaussian Noise (AWGN), Rayleigh and Rician fading channels) by applying concatenated RS-LDPC coding technique. The performance is evaluated by calculating the BER for different values of Signal to Noise Ratio (SNR).

Keywords: BER, WiMAX, RS, LDPC, concatenated code