OFDM for Wireless Multimedia Communications
OFDM for Wireless Multimedia Communications
CS-OFDMA: a new wireless CDD physical layer scheme
IEEE Communications Magazine
A tutorial on multiple access technologies for beyond 3G mobile networks
IEEE Communications Magazine
Bandwidth-efficient wireless OFDM
IEEE Journal on Selected Areas in Communications
New OFDM structure with parallel combinatory code
APCC'09 Proceedings of the 15th Asia-Pacific conference on Communications
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In this paper, we propose a new modulation named parallel combinatory/high compaction multi-carrier modulation (PC/HC-MCM) using the techniques of parallel combinatory orthogonal frequency division multiplexing (PC-OFDM) and high compaction multi-carrier modulation (HC-MCM). Two types of PC/HC-MCM systems, which are named as modulated PC/HC-MCM system and (unmodulated) PC/HC-MCM system, can be designed. The modulated PC/HC-MCM system achieves better bit-error rate (BER) performance than that of HC-MCM system with equal bandwidth efficiency (BWE). The PC/HC-MCM system can obtain the better peak-to-average power ratio (PAPR) characteristics by selecting appropriate constellation for each subcarrier. On the other hand, since PC/HC-MCM can divide the PC-OFDM symbol duration into multiple time-slots, the advantages of frequency hopping (FH) can be applied in the PC/HC-MCM system. Therefore, we also combine the PC/HC-MCM and frequency hopping multiple access (FHMA) to propose a novel multiple access (MA) system. It can simultaneously transmit multiple users' data within one symbol duration of PC-OFDM.