Comparative study of frequency agile data transmission schemes for cognitive radio transceivers
TAPAS '06 Proceedings of the first international workshop on Technology and policy for accessing spectrum
A new turbo coding approach to reduce the Peak-to-Average Power Ratio of a multi-antenna-OFDM system
International Journal of Mobile Communications
Peak-to-average power ratio reduction technique for MIMO/OFDM systems
International Journal of Mobile Communications
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Single-carrier modulation such as quadrature amplitude modulation (QAM) or carrierless amplitude modulation-phase modulation (CAP), and DMT are alternative techniques for providing digital communication in a variety of applications, in particular ADSL for communication over the telephone company subscriber lines. Although theory predicts comparable performance under ideal implementations, a definitive comparison of performance over a wide range of conditions will require more experience from field trials. Similarly, accurate comparison of implementation costs must await the greater availability of commercial-grade devices. However, enough is now known about these modulation schemes to compare their inherent similarities and differences in performance and cost. Overall, a present view of single-carrier and multitone modulation indicates comparable performance with some differences depending on the type of degradation. Costs should also be approximately equal, with multitone having some advantage in digital processing, but requiring greater cost in analog circuitry