Analysis of DWT OFDM using Rician Channel and Comparison with ANN based OFDM

As the generation grown up, designing of the wireless communication system towards providing best performance by the services such as high speed of data delivery, high capacity and high bit rate. MC-CDMA (Multi CarrierCode Division Multiple Access) is a desired technique for such cases, MC-CDMA gives best results by the combination of OFDM (Orthogonal Frequency Division Multiplexing) and CDMA (Code Division Multiple Access). So far OFDM used FFT (Fast Fourier Transform) as a basic building block, due to the intolerable cyclic prefixes OFDM led to the replacement of FFT by suitable transform. In this paper performance of OFDM can be increased by replacing FFT based OFDM by DWT based OFDM with Rician fading channel, analysis can be done using Linear Analysis which reduces the time complexity, increases the bandwidth efficiency and decreases the complexity. The spreading code like Walsh code is used in receiver and transmitter side for spreading the data. Also doing the comparison of DWT based OFDM with ANN against DWT based OFDM with Rician Fading Channel using performance of BER (Bit Error Rate). KeywordsANN, DWT, FFT, OFDM, Rician Fading Channel.