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Among the emerging technologies for broadband wireless access, IEEE 802.16e is one of the most promising and attractive candidates. However, it also presents very challenging aspects in terms of radio resource management which intentionally left open to implementers. The IEEE 802.16e air interface standard is based on Orthogonal Frequency-Division Multiplexing (OFDM), which has been regarded as an efficient way to combat the Inter-Symbol Interference (ISI) for its excellent performance over frequency selective channels for broadband wireless networks.
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