Patent ID: 8891355

Claim:
A communication device for information transmission, the information incorporated into at least one message packet composed of first and second codewords, the device comprising: an encoder for encoding the message packet as corresponding to first and second specific pulse widths in accordance with a codebook that relates the first codeword to said first specific pulse width and the second codeword to said second specific pulse width, said first and second pulse widths being distinguishable from each other; wherein said encoder further comprises: an designator for assigning a first code value and a second code value from a codelist to the message packet; a correlator for correlating said first code value to a first specific pulse and said second code value to a second specific pulse; and a pulse generator for producing said signal having said first and second specific pulse widths, wherein said specific pulses correspond to said specific pulse widths; a transmitter for transmitting a signal having said first specific pulse width and said second specific pulse width across a channel; a processor for analyzing said signal as corresponding to said first specific pulse width and said second specific pulse width; and a decoder for decoding said first specific pulse width and said second specific pulse width to obtain the message packet; said correlator further comprises: a coefficient designator for assigning a first coefficient to a first generated pulse width and a second coefficient to a second generated pulse width, said generated pulse widths corresponding to said specific pulses produced by said pulse generator; and a product processor for multiplying said first and second coefficients respectively to said first and second generated pulse widths to correspondingly obtain said first and second specific pulse widths.