In this paper, the performance of block coding scheme based on complementary sequences, which allows coding gain and reduction of peak to average power ratio(PAPR) of multicarrier signals, is evaluated over frequency selective Rayleigh fading channel, employing the efficient soft decision decoding method. Above all, 8-carrier QDPSK and 8DPSK systems exhibit good performance in terms of bit erro...

Orthogonal Frequency Division Multiplexing (OFDM) is an efficient method of data transmission for high speed communication systems. However, the main drawback of OFDM system is the high Peak to Average Power Ratio (PAPR) of the transmitted signals. OFDM consist of large number of independent subcarriers, as a result of which the amplitude of such a signal can have high peak values. Coding, phas...

Orthogonal Frequency division Multiplexing (OFDM) is an efficient method of data transmission for high speed communication systems. However, the main drawback of OFDM system is the high Peak to Average Power Ratio (PAPR) of the transmitted signals. OFDM consist of large number of independent subcarriers, as a result of which the amplitude of such a signal can have high peak values. Coding, phas...

Large-scale (LS) multi-user (MU) multiple input multiple output orthogonal frequency division multiplexing (MIMO-OFDM) is considered to be a desirable signal transmission scheme because it can significantly improve the energy efficiency (EE) and spectral efficiency (SE) of the system. However, there are many difficulties in realizing an LS-MU-MIMO-OFDM system, and one of these is its high peak-...

Reed-Muller codes are studied for peak power control in multicarrier code-division multiple access (MC-CDMA) communication systems. In a coded MC-CDMA system, the information data multiplexed from users is encoded by a Reed-Muller subcode and the codeword is fully-loaded to Walsh-Hadamard spreading sequences. The polynomial representation of a coded MC-CDMA signal is established for theoretical...

OFDM is a special kind of Multi Carrier modulation technique which forms the basis for 4G Wireless system. OFDM is a key broadband technology that can supports data rates in excess of 100 Mbps that is essential for next generation 4G broadband communication.. Peak To Average Power ratio is one of the serious problems in OFDM technology that is problem of extreme excursions of transmitted signal...

Orthogonal Frequency Division Multiplexing (OFDM) is a very attractive technique for high data rate transmission in wireless and wired applications. However, implementation of the OFDM system entails several difficulties. One of the major drawbacks is the high peak to average power ratio (PAPR) of the transmitted signals. Several approaches exist to reduce PAPR of OFDM symbols. Precoding is a n...