OFDM sub-carrier allocation algorithm for a multiple user data enhanced radio server (MUDERS) using a general purpose processor platform
NOLAN, KEITH EDWARD
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Citation:Nolan, K.E, Mackenzie, P., and Doyle, L.E `OFDM sub-carrier allocation algorithm for a multiple user data enhanced radio server (MUDERS) using a general purpose processor platform? in Proceedings of 4th Software Defined Radio (SDR) Forum Technical Conference, Phoenix, Arizona, Nov 15-18th, 2004, pp 1-6
This paper presents a novel spectrum-allocation technique designed for a high data-rate and spectrally-efficient multiple-user wireless system. The core of this system is a reconfigurable radio, implemented on a General-Purpose Processor (GPP) platform. A type of Dynamic Orthogonal Frequency Division Multiplexing Multiple Access (DOFDMA) is used to transmit a multiplex of several information sources. A novel means of sub-carrier allocation is utilised allowing the spectrum allocation for each service to be varied according to the spectrum-usage at the time of the request and priority of the particular service. In addition a novel technique that enables frame synchronisation, carrier-frequency offset estimation and a means of notifying the remote receiver(s) of the subcarrier allocation using a single OFDM symbol will be presented. A prototype model for the Multiple User Data Enhanced Radio Server (MUDERS) modulator will be presented, focusing on a means of conveying the spectrum allocation information to a remote receiver(s).
Science Foundation Ireland
Keywords:Electronic & Electrical Engineering