Invention Grant
US08418036B2 Method and apparatus for performing forward error correction in an orthogonal frequency division multiplexed communication network 有权
在正交频分复用通信网络中执行前向纠错的方法和装置

Method and apparatus for performing forward error correction in an orthogonal frequency division multiplexed communication network
Abstract:
According to some embodiments of the disclosed method and apparatus, systems and methods are provided that utilize extra payload capacity present in a symbol pad of a PHY payload to decrease the coding rate of an FEC coding scheme without increasing the symbol rate or decreasing the PHY rate of a corresponding data transmission. If a symbol pad length that would result from encoding a MAC frame using a default coding scheme would be at least as great as a parity length of the default coding scheme, and a new coding scheme maintaining the same parity length but having a reduced information bit length may be determined and used to encode the MAC frame. Owing the reduced information bit length, the new coding scheme has a reduced coding rate, but maintains the same number of OFDM symbols as the default coding scheme.
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