摘要 |
Abstract: A method of channel estimation in an OFDM transmission system having a transmitter and a receiver according to 5 standard IEEE 802.11x, comprising: in the transmitter, setting an identifier in the reserved bits section of the header following the preamble in a physical layer frame, attaching a postamble at the end of said frame without altering the length information in the 10 header, and transmitting said frame over the channel, in the receiver, checking said reserved bits section in the header of a frame received over the channel for said identifier and, if said identifier is detected, using the postamble and the preamble of the frame to estimate the 15 channel. (Fig. 3) -4 0 < Q CC) C) z Q) C)) ) |