A Newsubblock Partition Technique for PTS in OFDM Systems

In recent years, OFDM has gained a lot of interest in diverse-digital communication applications. This has been due to its favorable properties like high spectral efficiency and robustness to channel fading. Some of the major drawbacks in OFDM are its high peak-to-average-power ratio(PAPR) of the transmitted signals and the synchronization of signals. In this paper, a new subblock partition technique has been proposed in which signal subbands are partitioned in no. of subblocks using pseudo-random partitioned technique and then interleaved partition technique is applied. It is observed that PAPR is reduced as compared to conventional PTS. Keywords—Orthogonal frequency division multiplexing (OFDM), peak-to-average power ratio (PAPR), partial transmit sequence (PTS), complementary cumulative distribution function (CCDF), inter-carrier-interference (ICI),Power amplifier (PA)