Design and Performance of an LDPC-Coded FH-OFDMA System in the Uplink Cellular Environments
نویسندگان
چکیده
An LDPC-coded FH-OFDMA system is proposed for the uplink of a packet-based cellular system, where the frequency hopping (FH) is based on a resource block (RB) for coherent demodulation. For the system, different RB types are employed either for better intercell interference (ICI) averaging capability or for better channel estimation performance. For the receiver, practical iterative channel estimation and decoding methods are proposed to improve the channel estimation performance without boosting the pilot power and to mitigate the adverse effects of the ICI. Extensive simulation results are provided to show the effect of the RB size on the channel estimation and ICI averaging performance as well as possible application of the proposed receiver in harsh mobile environments with dynamic packet allocation. key words: iterative channel estimation, frequency hopping OFDMA, uplink
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عنوان ژورنال:
- IEICE Transactions
دوره 89-B شماره
صفحات -
تاریخ انتشار 2006