Pollock, Vande Sande & Amernick, RLLP
Method and apparatus for transmission and reception
 In a method for transmission and reception over N transmission channels, the transmitting side performs orthonormal transform processing of N-channel modulated signals so that the resulting transformed output signals have lower cross-correlation, and the transformed N-channel signals are multiplexed and transmitted over the N-channels. At the receiving side, the N-channel received signals are subjected to inverse orthonormal transform processing to obtain N-channel modulated signals, which are demodulated to obtain a digital signal. 
Nippon Telegraph & Telephone Corporation
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inventional inventional additional
Ken Toshio Yasunori
Kumagai Nojima Suzuki