公开(公告)号：EP1236327A4

公开(公告)日：2003-07-23

申请号：EP00984053

申请日：2000-12-08

申请人： TIME DOMAIN CORP

发明人： FULLERTON LARRY W ,  COWIE IVAN A ,  RICHARD JAMES L ,  BRETHOUR VERNON R

IPC分类号： H04L27/20 ,  H04B1/7095 ,  H04B1/7176 ,  H04B1/7183 ,  H04L25/49 ,  H04L27/22 ,  H04L27/30 ,  H04B1/69

CPC分类号： H04B1/7176 ,  H04B1/7095 ,  H04B1/7183 ,  H04L25/4902

摘要： A method for communicating information is using ultra wideband impulse radio transmitter and receiver. The method includes the steps of generating and transmitting a series of time-modulated pulse outputted from I and J channels, each pulse delayed by of four pre-determined time delay periods corresponding to points (M1, M2, M3, or M4) and representative of at least two data bits of information, and receiving and demodulating the series of time-modulated pulses (I, J) to estimate the data bits associated with each pulse.

公开(公告)号：EP0782791A4

公开(公告)日：2004-10-13

申请号：EP95934546

申请日：1995-09-20

申请人： TIME DOMAIN CORP

发明人： FULLERTON LARRY W ,  COWIE IVAN A

IPC分类号： H04B1/69 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/708 ,  H04B1/7163 ,  H04B1/7176 ,  H04B1/7183 ,  H04B14/02 ,  H04L27/26

CPC分类号： H04B1/71637 ,  H04B1/69 ,  H04B1/707 ,  H04B1/70753 ,  H04B1/708 ,  H04B1/71632 ,  H04B1/71635 ,  H04B1/7176 ,  H04B1/7183 ,  H04B14/026 ,  H04B2001/6908 ,  H04B2201/70707 ,  H04L27/2601 ,  H04L27/2602

摘要： An impulse radio communications system using one or more subcarriers to communicate information from an impulse radio transmitter (901) to an impulse radio receiver (1400). The use of subcarriers provides impulse radio transmissions added channelization, smoothing and fidelity. Subcarriers of different frequencies or waveforms can be used to add channelization of impulse radio signals. The impulse radio uses modulated subcarrier(s) for time positioning a periodic timing signal or a coded timing signal. Alternatively, the coded timing signal can be summed or mixed with the modulated subcarrier(s) and the resultant signal is used to time modulate the periodic timing signal. Direct digital modulation of data is another form of subcarrier modulation for impulse radio signals. Direct digital modulation can be used alone to time modulate the periodic timing signal or the direct digitally modulated periodic timing signal can be further modulated with one or more modulated subcarrier signals.