Method and apparatus for allocating a pilot carrier...

Details Method and apparatus for allocating a pilot carrier... Method and apparatus for allocating a pilot carrier...

2007-10-16

2007-10-16

Ho, Duc (Department: 2616)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S208000, C370S210000

Reexamination Certificate

active

10390320

ABSTRACT:
A method and apparatus for allocating pilot carriers adaptively in an OFDMA communication system are disclosed. To improve phase error estimation performance and optimize the number of pilot carriers allocated to each sub-channel, an OFDMA transmitter changes the number of pilot carriers for a sub-channel according to the status of the sub-channel. Consequently, less pilot carriers are allocated to a sub-channel in a good state, reducing power consumption and more pilot carriers are allocated to a sub-channel in a bad state, improving channel estimation performance despite increased power consumption.

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International Search Report dated Jun. 19, 2003 issued in a counterpart application, namely Appln. No. PCT/KR03/00511.

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