摘要:
Provided is a spectrum sensor for cognitive wireless communication whereby it is possible to improve communication efficiency. In a cognitive wireless communication system, a spectrum sensor senses spectra in multiple frequency bands. A spectrum sensor (1) is configured to be able to operate in one operation mode selected from among a spectrum sensing mode for sensing spectra, and a communication mode for communicating with a wireless communication device. Further, the spectrum sensor is provided with a controller (51) for controlling the operation mode. The controller (51) switches between the above-mentioned operation modes during the symbol period of an ultra-wideband physical layer (UWB PHY).
摘要:
A method to increase the available bandwidth across a wired network is provided. The method includes transmitting an ultra-wideband signal across the wired network. One embodiment of the present invention may transmit a multiplicity of ultra-wideband signals through a community access television network. The present invention may transmit an ultra-wideband signal across an optical network, a cable television network, a community antenna television network, a community access television network, a hybrid fiber-coax network, an Internet service provider network, and a PSTN network.
摘要:
An apparatus for data communication that receives a plurality of pulses from a remote communications device, determines a pulse puncturing rate based on the pulses, and punctures or discards subsequent pulses based on the pulse puncturing rate. During intervals when punctured pulses are expected, the apparatus operates in a lower power consumption mode for the purpose of conserving power. In another aspect, a receiving apparatus determines the pulse puncturing rate based on received pulses, and transmits the pulse puncturing rate information to a transmitting apparatus. In response, the transmitting apparatus sends a subset of the pulses it would have transmitted based on the pulse puncturing rate. Because the receiving apparatus receives fewer pulses (e.g., a subset), the receiving apparatus may operate in a lower power consumption mode for longer periods in order to conserve power. Similarly, because the transmitting apparatus sends fewer pulses, it may also operate in a lower power consumption mode for longer periods.
摘要:
The invention relates to a cell organisation and method for controlling ultra-wideband (UWB) transmitting/receiving devices, the aim of which is to improve spatial occupancy (number of transmitters/receivers operating per unit area) and spectral efficiency (number of transmitters/receivers operating in a certain frequency range) in a predetermined area. The control method is based on configuring the optimum parameters - transmission power, bandwidth among others - for each UWB transmitter/receiver present in each cell. Said configuration is calculated by monitoring the spectral parameters of the UWB transmitters/receivers operating in the area under control using a series of UWB sensors. In a preferred embodiment of the invention the sensors can be interconnected using photonic technology.