A Performance Analaysis of BPSK OFDMSystem by Novel Based Haar Wavelet

International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering

article

T.V.Ramesh¹  A.Jaya Prakash² 

[1] Dept. of ECE, Thandrapaparaya Institute of Science & Technology;Thandrapaparaya Institute of Science & Technology

关键词: Peak-to-average power ratio(PAPR);    Bit error rate(BER);    Haar Wavelet;    Orthogonal frequency division multiplexing(OFDM);   

DOI  :  10.15662/ijareeie.2014.0311046

来源: Research & Reviews

【 摘 要 】

orthogonal frequency division multiplexing (OFDM) is the most popular modulation technique in modern wireless communication systems. Even though there are many advantages of OFDM, it has two main drawbacks: High peak-to-average power ratio (PAPR) and frequency offset. In this paper the issue of PAPR in OFDM is discussed. Due to the large number of subcarriers used, OFDM systems have a large dynamic signal range with a very high peak-to-average-power ratio (PAPR) which makes OFDM sensitive to nonlinear effects. This paper proposes a novel Haar-Wavelet based BPSK OFDM system. The Haar Wavelet transformation decomposes the data symbol sequence like half of the data symbols are zeros and the rest are √2 or -√2 and we can have the PAPR reduced by 3dB at most, compared with the conventional OFDM system. In this paper we propose a novel decoding algorithm for the proposed OFDM system, derive the bit error rate performance in theory. We compare cumulative distribution function for PAPR for the proposed OFDM v/s conventional OFDM and finally we compare the BER performance of our proposed OFDM system with the conventional one.

【 授权许可】

Unknown