| US 7,539,267 B2 | ||
| Impulse radio systems with multiple pulse types | ||
| Zafer Sahinoglu, Somerville, Mass. (US); and Sinan Gezici, Princeton, N.J. (US) | ||
| Assigned to Mitsubishi Electric Research Laboratories, Inc., Cambridge, Mass. (US) | ||
| Filed on Aug. 20, 2004, as Appl. No. 10/923,481. | ||
| Prior Publication US 2006/0039447 A1, Feb. 23, 2006 | ||
| Int. Cl. H04L 27/00 (2006.01) | ||
| U.S. Cl. 375—295 [375/130; 375/340; 375/351; 455/103; 455/102; 455/168.1; 455/20; 455/91; 327/291; 332/106; 341/20; 341/174] | 8 Claims |
| 1. A method for signaling in an ultra wide bandwidth communications system, comprising:
generating a sequence of data symbols;
transmitting sequentially, for each data symbol, a set of reference pulses, in which the set includes a plurality of reference
pulses and each reference pulse being of a different type;
transmitting sequentially a set of data pulses, there being one data pulse for each corresponding reference pulse, a type
of each data pulse being identical to the type of the corresponding reference pulse, in which the set of data pulses are transmitted
after the set of reference pulses;
receiving the set of reference pulses and the set of data pulses, in which the set of data pulses are received after the set
of reference pulses;
filtering each data pulse according to a matching template pulse specific for the type of the corresponding reference pulse;
and
multiplying each filtered data pulse by a delayed version of the received data pulse to recover the data symbol, and in which
received data pulse is weighted according to the pulse type.
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