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modem DBS systems utilize digital transmission technology to provide greater capacity and improved performance. In such a system, each transponder signal may be further multiplexed in the time domain (e.g. TDM encoding) to provide a number of individually addressable “channels” of packetized inform...
in a 500-MHz portion of the spectrum of a given satellite system on each polarization, for a total of 32 TDM channels per satellite. The exact transmission capacity of each TDM channel depends on the selected parameters for the DVB modulators64and the downlink availability performance requirements...
For example, while a VSAT is transmitting IP data to a particular LEO satellite, the satellite may move out of range from the VSAT (no longer covering the cell within which the VSAT is located) and a new LEO satellite may move into range of the VSAT—the VSAT transmissions would then ...
The performance of certain of the operations may be distributed among the processors, not only residing within a single machine, but deployed across several machines. Processors or processor-implemented modules may be in a single geographic location (for example, within a home or office environment,...
Click for automatic bibliography generation Assignee: Hughes Network Systems, LLC (Germantown, MD, US) International Classes: H04B7/185;H04W24/02 Field of Search: 370/328, 370/316, 370/311, 370/326, 455/98, 455/12.1, 455/427, 455/63.1, 455/296, 455/430, 455/456.1, 455/522, 455...
In Section 2, the optimal receiver for joint detection and decoding is identified, and a set of iterative receivers that provide a trade-off between complexity and performance is presented. The application of iterative receivers to the layered space-time architecture is discussed in Section 2.3. ...
Section 7 Performance Specifications Averaged across a whole year, each DirecPC receiver should be expected to have a BER less than 10E—10 more than 99.5% of the time where a single bit error causes the loss of an entire packet.
Unlike conventional CDMA systems, joint detector/interference canceller/despreader609does not require all the signals accessing the same spectrum at the same time to be of equal power. In fact, the performance is better when the signals are of different power level. Thus, no tight power controls...
thereby requiring the same multicast sessions to be sent on every outroute. Such redundancy can degrade system performance and waste bandwidth that could be used to carry other traffic. Based on the foregoing, there is at least a need for an approach for automatically optimizing load balancing to...