Patent ID: 8717867
Filing Date: 2014-05-06
Classification: H04L,H04W

Abstract:
1. A wireless terminal for use in a wireless communications system, the wireless terminal comprising: a channel estimator configured to determine a channel dispersion associated with multipath signal reception and to report the channel dispersion to a base station in communication with the wireless terminal; an orthogonal frequency division multiplex (OFDM) unit configured to receive from the base station OFDM symbols having a symbol length and a prefix length that is based upon the channel dispersion reported to the base station by the wireless terminal and other wireless terminals having a similar channel dispersion; wherein, the OFDM unit is configured to receive an OFDM symbol in which the OFDM symbol is retransmitted an integer number of times in response to a determination by the base station that a required prefix is longer than the symbol.