System and Method for Orthogonal Frequency Division Multiple Access

摘要

An embodiment OFDMA frame includes a header with signal (SIG) fields that are encoded at different sampling rates than one another. In one example, a first signal field is encoded at a 64 point fast frequency transform (FFT) sampling rate, and the second SIG field is encoded at a 256 point FFT sampling rate. The first SIG field may carry parameters for decoding the second SIG field, and the second SIG field may carry resource allocation information for a payload of the OFDMA frame. The first SIG field may carry an identifier of an access point that transmits the OFDMA frame.

主权项

1. A method for transmitting data in a wireless network, the method comprising:
transmitting, by an access point, an orthogonal frequency division multiple access (OFDMA) frame to one or more mobile devices over a 20 megahertz (MHz) frequency channel, the OFDMA frame comprising a frame header that includes a first signal (SIG) field and a second SIG field, wherein the first SIG field is encoded at a different sampling rate than the second SIG field.