A Proficient Optimal Pilot Symbol with Interleaving using Walsh Hadamard Transform
Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing (MIMO OFDM) with interleaver using Fast Walsh Hadamard Transform (FWHT) which provides low complexity spectral efficiency and error performance is proposed as the well transmission technique for energy efficient 4G wireless communication system. However due the subcarrier symbols with in a sub block eliminate the Inter carrier Interference (ICI) Here propose an interleaving technique with FWHT to minimize the Inter Antenna Interference (IAI) and the combination of WHT with interleaving is improve the performance of Bit Error Rate (BER). Meanwhile the peak to average power ratio (PAPR) of the system is also minimized. The use of WHT is to convert the multiplexing time domain into frequency domain. This is helpful to extending the Euclidean distance between the transmission symbol for detection. When BER is 10-1 the gain is 2 dB is achieved. The performance is carried out by MIMO, WHT, and Pilot insertion with interleaving. Simulation results demonstrate that the proposed scheme can achieve signiﬁcant complexity savings while maintaining a good PAPR performance.