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Peak to average power ratio reduction in MC-CDMA using partial transmit sequences

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4 Author(s)
Jitapunkul, S. ; Dept. of Electr. Eng., Chulalongkorn Univ., Bangkok, Thailand ; Wutthipornpong, K. ; Songthanasak, J. ; Kunaruttanapruk, S.

MC-CDMA is an attractive technique for achieving transmission in fading channels in high data rate mobile communications. However, it requires a high quality amplifier to cope with the large amplitude fluctuation at the transmitter side. The partial transmit sequences (PTS) scheme is one of the best methods to reduce peak to average power ratio (PAPR). A modified PTS scheme for uplink communications is proposed, in contrast to the original PTS, which is generally applied in the downlink in an OFDM system. While successfully reducing PAPR, PTS alters the code correlation property which affects bit error rate when applied to the MC-CDMA system uplink. Therefore, modified receivers to deal with this problem are also proposed.

Published in:

Wireless Telecommunications Symposium, 2004

Date of Conference:

14-15 May 2004