| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve the receiving quality of an MBMS channel in an OFDM type communication system. Ž<P>SOLUTION: A transmitter has multiplexing means for multiplexing a unicast channel, an MBMS channel, a unique pilot channel for a specific cell, and a common pilot channel for a plurality of cells to create a transmission symbol. The multiplexing means performs time-division multiplexing on a unicast frame including the unicast channel and an MBMS frame including the MBMS channel, in the same frequency range. The insertion density of the common pilot channel included in the MBMS frame is higher than the insertion density of the unique pilot channel included in the unicast channel. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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