Patent ID: 9614633
Date: 2017-04-04
CPC Classifications: H04B,H04J,H04L

Claim:
1. A method comprising: forming two or more blocks of output symbols for orthogonal frequency division multiplexing (OFDM) transmissions over two or more antennas, wherein the forming comprises encoding two or more blocks of information-bearing symbols for transmissions over the two or more antennas, and inserting null values within the two or more blocks of information-bearing symbols so that the position of the null values switches among subcarriers over time; and transmitting, via the two or more antennas, transmission signals in accordance with the two or more blocks of output symbols, wherein the two or more blocks of output symbols include a first block of output symbols and a second block of output symbols, and wherein transmitting the transmission signals comprises: transmitting, via a first antenna of the two or more antennas, a first transmission signal in accordance with the first block of output symbols; and transmitting, via a second antenna of the two or more antennas, a second transmission signal in accordance with the second block of output symbols.