International Journal of Applied Engineering Research ISSN 0973-4562 Volume 10, Number 1 (2015) pp. 1077-1082 © Research India Publications http://www.ripublication.com Development of Data Recovery System for the Data Transmitted over Rayleigh Faded Channel S. Venkateswarlu 1 , Dr. Sastry JKR 2 1 Research Scholar, Department of ECE, KL University, Vaddeswaram, 522 502, A.P., India somu23@kluniversity.in 2 Professor, Department of ECM, KL University, Vaddeswaram, 522502, A.P., India sastryjkr2002@yahoo.co.in Abstract Wireless communication channel is being used as primary means of communication nowadays. Data is DPSK modulated and hamming encoded before being given as input to the Rayleigh Faded Wireless Communication channel. This paper mainly focuses on the data re-generation techniques from phase modulated data at the source side. The generated data is made to pass through the channel by undergoing various transmission impairments. To accurately regenerate the data at the receiver side equalizers are recommended for usage. Decision feedback equalizer is one such equalizer that reproduces the data accurately. It takes care of all types of the noise components and suppresses the AWGN also. It counters the Doppler Effect and ISI most accurately. Key Words: Feedback Equalizer, Doppler correction, I channel and Q channel. Data Generation The input to the system is the message of 'L' number of characters. The model converts the given text into ASCII code and supplies the bit stream to DPSK encoder[2]. The general representation for a set of M-ary phase signaling waveform is[5][2] S(t) = {U(t) exp j ( 2Πf c t + 2Π (m-1) / M + θ )} 0 ≤ t ≤ T, m = 1,2,3,4 θ = initial phase.