March 1, 2004
The U.S. military air-deployed an electronic fence-line of Sperient's sensors at China Lake Naval Air Weapons Station CA. more...


15 February 2004
The U.S. military air-deployed an electronic fence-line of Sperient's sensors at China Lake Naval Air Weapons Station CA. more...


18 September 2003
Sperient Corporation demonstrated a world-record 250 Mbps wireless radio today. 'These Radios may be expected to cost less than $10 in OEM quantities',says Tom Rosenbury, Sperient's President .more...

 
Ultra Wide Band
 

How Ultra-Wide Band Works

UWB communication is accomplished by transmitting wideband, ultra-short pulses, and receiving those pulses remotely.  For high-speed communications, timing and synchronization are important research problems.  Rapid synchronization of a receiver to the transmitter is particularly important in networking applications.  We have developed a new asynchronous method that is very fast and yet simple to implement.  We propose to develop a family of ultra-wide band communication links with instantaneous synchronization and channel equalization capabilities, two of the most difficult tasks in UWB link design.
While it is well known that rapid synchronization is critical in network communications, it is less appreciated that channel equalization of UWB is also critical in any general communication environment. Our design is based on a multi-pulse coding scheme with UWB impulses. This type of UWB modulation is distinctly different from the pulse position and pulse width modulation techniques commonly used in other UWB or optical systems.  Significantly enough, the modulation and demodulation tasks are accomplished by CMOS analog circuitry. The design allows the communication links to be small, low-cost, robust, and low power. 
 
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