In intermediate conditions QAM and

7 02 2009

802. 16e uses Scalable OFDMA to carry data, supporting channel bandwidths of between MHz and MHz, with up to subcarriers. In intermediate conditions, QAM and QPSK can also be employed. It supports adaptive modulation and coding, so that in conditions of good signal, highly efficient QAM coding scheme is used, whereas where the signal is poorer, more robust BPSK coding mechanism is used.

In intermediate conditions, QAM and QPSK can also be employed. It supports adaptive modulation and coding, so that in conditions of good signal, highly efficient QAM coding scheme is used, whereas where the signal is poorer, more robust BPSK coding mechanism is used. 802. 16e uses Scalable OFDMA to carry data, supporting channel bandwidths of between MHz and MHz, with up to subcarriers.

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