Patent ID: 9571324
Date: 2017-02-14
CPC Classifications: H04L

Claim:
1. A device for receiving a transmitted OFDM (orthogonal frequency division multiplexing) signal, comprising: a radio transceiver including a mixer for downconverting a received carrier modulated with OFDM symbols; a processing circuitry connected to the radio transceiver to: demodulate the OFDM symbols to extract a plurality of frequency-domain symbols from each OFDM symbol; estimate phase errors for the OFDM symbols based upon pilot signals contained in non-consecutively received OFDM symbols and not based upon information contained in other received OFDM symbols; estimate the phase error for an OFDM symbol not containing a pilot signal as a function of the phase error estimated for a previous OFDM symbol containing a pilot signal; and, rotate the phases of frequency domain data symbols extracted from a particular OFDM symbol to compensate for the phase error estimated for that particular OFDM symbol.