摘要:
A system, method and article of manufacture are provided for managing the transmission suitability of a channel in a multi access scheme. In general, information relating to noise associated with a channel is obtained.(202) A potential effect of the noise on a transmission quality of the channel is then estimated based on the obtained information.(204) Next, a rating is assigned to the channel based on the estimated potential effect.(206) Based on the assigned rating, the channel is classified into a grade of service class.(208) Information relating to the channel and its associated rating and grade of service class is then stored in a database.(210)
摘要:
A system, method and article of manufacture are provided for determining a location of a wireless device (402) in a wireless communication system (400). In general, an initial request is transmitted to wireless devices having known locations for position information so that a location can be determined for a first wireless device having an undetermined location (102). Those wireless devices with known locations that receive the initial request in turn transmit positioning information to the first wireless device (102). If position information from less than a sufficient number of wireless devices with known location is received by the first mobile wireless device, an additional request is then transmitted for response from these responding other wireless devices (104). After responses to the request from one or more of these responding other wireless devices are received (106), communication then occurs with at least a portion of the responding wireless devices to obtain information relating to the distance between the first wireless device and the responding wireless devices it is communicating with (108). Next, a location of the first wireless device is estimated using the information obtained from these responding wireless devices and the position information received from the wireless devices with known locations (110).
摘要:
The present invention is a transmitter system comprising a data modulation unit, a transmitter unit and an antenna. The data modulation unit is configured to generate a digital stream of pulse data which is synchronized with a master clock. The data modulation unit is configured to support pulse streams having different modulation techniques. The different modulation techniques include on-off keying and pulse amplitude modulation. The data modulation unit may be configured to include both a pulse amplitude modulation module and a pulse repetition frequency module.
摘要:
The present invention is a transmitter system comprising a data modulation unit, a transmitter unit and an antenna. The data modulation unit is configured to generate a digital stream of pulse data which is synchronized with a master clock. The transmitter unit is coupled to the data modulation unit. The transmitter unit is configured to receive the digital stream of pulse data and generates a RF pulse stream for transmission. The antenna is coupled to the transmitter unit and the antenna is configured to transmit the RF pulse stream. The data modulation unit is configured to support pulse streams having different modulation techniques. The different modulation techniques include on-off keying and pulse amplitude modulation. The data modulation unit includes a pulse amplitude modulation module which is configured to vary the amplitude of a modulated pulse. The data modulation unit may also be configured to include a pulse repetition frequency module which is configured to vary the pulse repetition frequency. Further still, the data modulation unit may be configured to include both a pulse amplitude modulation module and a pulse repetition frequency module.
摘要:
A method to increase the available bandwidth across a wired network (70) 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 (45), a cable television network (25), a community antenna television network, a community access television network, a hybrid fiber-coax network, an Internet service provider network (85), and a PSTN network (75).
摘要:
An ultra-wideband (UWB) antenna array (10) is provided. One embodiment of the present invention employs a multi-element antenna (15) for UWB beam forming (20) and also for time-of-arrival vector processing to resolve multi-path problems in an UMB communication system. Another embodiment of the present invention recovers the energy contained in the multi-path reflections to increase signal-to-noise ratios of received UWB pulses.
摘要:
A system and method (100) for encoding and decoding ultra-wideband information are provided. An ultra-wideband transmission is encoded by positioning bipolar pulse pairs. The bipolar pulse pairs assist in detecting errors in the ultra-wideband transmission, before the entire transmission has been received (104). The transmission is analyzed for errors and an error rate is calculated (108). The calculated error rate is compared to one or more predefined acceptable error rate levels to determine whether the calculated error rate of the transmission is within at least one of the predefined acceptable error rate levels (110).
摘要:
A wireless communication network system apparatus (10) which provides for isochronous data transfer between node devices of the network, which provides at least one master node device (12) which manages the data transmission between the other node devices (14a,..., 14n), which avoids or reduces interference from other wireless products and which resolves random errors associated with wireless technology including multipath fading. The system provides a communication protocol which shares the wireless transport medium between the node devices of the network, and which provides each node device (12, 14a-n) on the network a designated transmit time slot for data communication.