Systems and methods for high rate OFDM communications

摘要

Messages transmitted between a receiver and a transmitter are used to maximize a communication data rate. In particular, a multicarrier modulation system uses messages that are sent from the receiver to the transmitter to exchange one or more sets of optimized communication parameters. The transmitter then stores these communication parameters and when transmitting to that particular receiver, the transmitter utilizes the stored parameters in an effort to maximize the data rate to that receiver. Likewise, when the receiver receives packets from that particular transmitter, the receiver can utilize the stored communication parameters for reception.

主权项

1. A transceiver usable for packet communication comprising:
a receiver adapted for receiving a packet, the packet including a packet header having a signal field, the signal field including:
Length information in bytes and Rate information in an OFDM symbol, the Length information and the Rate information being such that the receiver can correctly determine the packet duration, andan indication of a set of communication parameters used for transmission of the packet, anda receiver station identifier; the receiver decoding the receiver station identifier to determine whether the receiver is an intended recipient of the packet and not decoding a remainder of the packet if the receiver determines it is not an intended recipient of the packet, wherein the receiver receives the packet at a first rate using a first cyclic prefix length and a first pilot tone allocation and receives a message comprising communication parameters which include a second cyclic prefix length and a second pilot tone allocation.