Title :
Efficient modulation scheme for OFDM system with ZP and MMSE equalizer
Author :
Leftah, Hussein A. ; Boussakta, Said
Author_Institution :
Sch. of Electr. & Electron. Eng., Newcastle Univ., Newcastle upon Tyne, UK
Abstract :
The modulation scheme for orthogonal frequency division multiplexing (OFDM) is constantly being developed either to explore the channel diversity or reduce the peak-to-average power ratio (PAPR) of the OFDM signal. This paper presents a new, very low complexity OFDM system, using a single unitary X-transform with zero-padding (ZP) and minimum mean-square error (MMSE) equalizer. Mathematical development supported by simulation results showed that, over multipath channels, the proposed ZP-X-OFDM scheme is better than the conventional ZP-OFDM. Moreover, the proposed system significantly reduces the transceiver complexity of the OFDM system and improves the bit-error-rate (BER) and the PAPR of the OFDM signal significantly.
Keywords :
OFDM modulation; computational complexity; diversity reception; equalisers; error statistics; least mean squares methods; multipath channels; radio transceivers; transforms; wireless channels; MMSE equalizer; PAPR; ZP equalizer; ZP-X-OFDM scheme; bit-error-rate improvement; channel diversity; efficient modulation scheme; mathematical development; minimum mean-square error equalizer; multipath channels; orthogonal frequency division multiplexing; peak-to-average power ratio reduction; single unitary X-transform; transceiver complexity reduction; very low complexity OFDM system; zero-padding equalizer; Bit error rate; Complexity theory; Equalizers; Peak to average power ratio; Phase shift keying; Orthogonal frequency division multiplexing (OFDM); ZP-X-OFDM; Zero-padding (ZP); minimum mean-square error (MMSE) and peak-to-average power ratio (PAPR);
Conference_Titel :
Communications (ICC), 2013 IEEE International Conference on
Conference_Location :
Budapest
DOI :
10.1109/ICC.2013.6655315
