Combination of OFDM and CDMA for high data rate UWB

Details Combination of OFDM and CDMA for high data rate UWB Combination of OFDM and CDMA for high data rate UWB

2007-05-03

arxiv.org/abs/0705.0430v1

Comptes rendus de l'acad\'emie des sciences, Physique 7 (09/2006) 774-784

Physics

Computational Physics

Scientific paper

10.1016/j.crhy.2006.07.001

For Wireless Personal Area Network (WPAN) systems, resource allocation between several users within a piconet and the coexistence of several piconets are very important points to take into consideration for the optimization of high data rate Ultra Wide Band (UWB) systems. To improve the performance of the Multi-Band OFDM (Orthogonal Frequency Division Multiplex) solution proposed by the Multi-Band OFDM Alliance (MBOA), the addition of a spreading component in the frequency domain is a good solution since it makes resource allocation easier and also offers better robustness against channel frequency selectivity and narrowband interference. The Spread Spectrum - Multi-Carrier - Multiple Access (SS-MC-MA) system proposed in this article offers not only the advantages of Multi-Carrier - Coded Division Multiple Access (MC-CDMA) brought by frequency spreading, but also a more effective dynamic resource allocation in a multi-user and multi-piconet context. These improvements are obtained without increasing the complexity of the radio-frequency part compared to the classical MBOA solution.

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