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In this paper, a low complexity cell search algorithm (ML-ACL algorithm) for mobile OFDMA systems is proposed, with IEEE 802.16e as the example. The main problem on cell search is the huge computational complexity due to the long pseudo-noise (PN) series. Based on the maximum-likelihood (ML) detection theory, the ML-ACL algorithm uses an adaptive correlation length (ACL) to greatly reduce computational...
Wireless broadband (WiBro) systems can provide high data rate wireless Internet access with personal subscriber station under the stationary or mobile environment. It is the orthogonal frequency division multiple access (OFDMA) in time division duplex (TDD) system with 768 useful subcarriers over a nominal bandwidth of 8.75 MHz at 2.3 GHz band and each frame is composed of 42 OFDM symbols, corresponding...
Orthogonal frequency division multiplexing (OFDM) is the modulation scheme of choice for digital video broadcasting-handheld (DVB-H), which is required to operate under high mobility conditions resulting in significant Inter-carrier Interference (ICI). To mitigate ICI, several cancellation schemes have been proposed but they require reliable channel information at the receiver which is quite challenging...
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