The Pulse of Cable
Ultrawideband technology, which uses timed pulses to transmit data, is rapidly emerging as a breakthrough in wireless: it provides the possibility of sending more data faster than any alternative. San Diego startup Pulse-Link wants to make ultrawideband the hot new technology for cable television as well. Requiring no changes to existing cable-television infrastructure, Pulse-Link’s system calls for as little as one new piece of equipment at the cable company’s facility and an additional user-installed box in each subscriber’s home. Pulse-Link’s equipment can encode and decode data that are sent in approximately nanosecond-long pulses and spread across all the radio frequencies used by standard cable-television. This technology, which won’t interfere with conventional signals, should double the amount of information that can be sent over the cables and allow cable operators to deploy bandwidth-hogging high-definition television signals without giving up existing channels.