Patent ID: 9160595
Filing Date: 2015-10-13
Classification: H04L,H04W

Abstract:
1. A communication device configured to communicate orthogonal frequency division multiplexing (OFDM) wireless communications, the communication device comprising: a processor circuit configured to shift positions of first and second pilot tones within a packet having a plurality of symbols, said processor circuit to vary, in a non-sequential manner, the positions of the first and second pilot tones between symbols of the plurality of symbols of the packet, while maintaining a predefined spacing between the first and second pilot tones, wherein a symbol of the plurality of symbols comprises twenty-six data subcarriers denoted (−1) to (−13) and (1) to (13), said processor circuit is to set the first pilot tone to subcarriers within the range of (−1) to (−13), and to set the second pilot tone to subcarriers within the range (1) to (13), said processor circuit to set the first and second pilot tones to a plurality of pairs of subcarriers including at least a pair of subcarriers (−10,4), a pair of subcarriers (−5, 9), and a pair of subcarriers (−13,1); and a transceiver to transmit an electromagnetic representation of the packet.