Abstract: System (100) and methods (3500) for receive processing of a burst communication system where co-channel signals (318) collide in a receiver (150). The methods comprise: simultaneously receiving co-channel signals (2002, 2004, 2006) transmitted from remote transmitters (104-112) at a first frequency; and independently performing a first iteration of a Turbo MUD process for a first co-channel signal and a second co-channel signal. The Turbo MUD process comprises: segmenting each of the first and second co-channel signals into a plurality of segments (2102, 2104, 2106) each having a unique SINR; computing a noise plus interference variance estimate for each segment; computing first bit likelihood values for each segment based on the noise variance estimate; computing second bit likelihood values for each segment based on the first bit likelihood values; and using the second bit likelihood values (i.e., soft in soft-out) to generate a first estimate of the first and second co-channel signals.

Abstract: System (100) and methods (3500) for receive processing of a burst communication system where co-channel signals (318) collide in a receiver (150). The methods comprise: simultaneously receiving co-channel signals (2002, 2004, 2006) transmitted from remote transmitters (104-112) at a first frequency; and independently performing a first iteration of a Turbo MUD process for a first co-channel signal and a second co-channel signal. The Turbo MUD process comprises: segmenting each of the first and second co-channel signals into a plurality of segments (2102, 2104, 2106) each having a unique SINR; computing a noise plus interference variance estimate for each segment; computing first bit likelihood values for each segment based on the noise variance estimate; computing second bit likelihood values for each segment based on the first bit likelihood values; and using the second bit likelihood values (i.e., soft in soft-out) to generate a first estimate of the first and second co-channel signals.

Abstract: A system and method for communicating includes a transmitter that transmits a communication signal having a plurality of successive frames, with each frame formed with alternatively arranged N known data symbols and M unknown data symbols such that the N known data symbols as training symbols. The communications signals are received within a receiver. The N known data symbols are synchronized at the receiver by correlating and time averaging the N known data symbols.

Abstract: Ultra fine and nanometer powders and a method of producing same are provided, preferably refractory metal and ceramic nanopowders. When certain precursors are injected into the plasma flame in a reactor chamber, the materials are heated, melted and vaporized and the chemical reaction is induced in the vapor phase. The vapor phase is quenched rapidly to solid phase to yield the ultra pure, ultra fine and nano product. With this technique, powders have been made 20 nanometers in size in a system capable of a bulk production rate of more than 10 lbs/hr. The process is particularly applicable to tungsten, molybdenum, rhenium, tungsten carbide, molybdenum carbide and other related materials.

Abstract: Ultra fine and nanometer powders and a method of producing same are provided, preferably refractory metal and ceramic nanopowders. When certain precursors are injected into the plasma flame in a reactor chamber, the materials are heated, melted and vaporized and the chemical reaction is induced in the vapor phase. The vapor phase is quenched rapidly to solid phase to yield the ultra pure, ultra fine and nano product. With this technique, powders have been made 20 nanometers in size in a system capable of a bulk production rate of more than 10 lbs/hr. The process is particularly applicable to tungsten, molybdenum, rhenium, tungsten carbide, molybdenum carbide and other related materials.

Abstract: A system and method for communicating includes a transmitter that transmits a communication signal having a plurality of successive frames, with each frame formed with alternatively arranged N known data symbols and M unknown data symbols such that the N known data symbols as training symbols. The communications signals are received within a receiver. The N known data symbols are synchronized at the receiver by correlating and time averaging the N known data symbols.