A communication device for transmitting orthogonal frequency division multiplexed (OFDM) signals in a wireless communication system. The device includes a plurality of antenna elements that transmit the OFDM signals to a receiver over a plurality of transmission channels in the wireless communication...http://www.google.de/patents/US7961588?utm_source=gb-gplus-sharePatent US7961588 - Communication device for receiving and transmitting OFDM signals in a wireless communication system
