Dynamic allocation of cyclic extension in orthogonal...

Details Dynamic allocation of cyclic extension in orthogonal... Dynamic allocation of cyclic extension in orthogonal...

2008-07-15

2008-07-15

Ngo, Ricky (Department: 2616)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Particular set of orthogonal functions

C375S260000, C375S348000

Reexamination Certificate

active

07400573

ABSTRACT:
Briefly, in accordance with one embodiment of the invention, an orthogonal frequency division multiplexing system may provide a dynamically calculated cyclic extension, the length of which may be based at least in part on a delay spread due to an experienced environmental condition. The length of the cyclic extension may be calculated by determining a channel impulse response, and then computing the energy distribution of the channel impulse response. The length of the cyclic extension may then be set according to the energy distribution of the channel impulse response.

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