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I think the journalist didn't understand what he was seeing. Clearly if signal strength is improved and phase distortion is removed, the error rate will go down

by lutusp 13y ago

I think the journalist didn't understand what he was seeing. Clearly if signal strength is improved and phase distortion is removed, the error rate will go down and this will improve apparent bandwidth, but without requiring more bandwidth than the system already can provide in principle. To me, the first sentence in your quote from the article is simply hyperbolic but has no connection with reality. The method doesn't do away with network congestion, it simply improves the signal at each participating device. > Congestion is a function of channel bandwidth and operation rate. I think the congestion this method addresses is that caused by unsophisticated signal treatment methods and an overall decline in performance. Obviously if the system can optimize the phase at each transmitting antenna and improve the received signal for each device, then more devices can use the system simultaneously. That's not how I would define "do away with network congestion", but again, I think the journalist just had no idea what he was describing.

TheEzEzz 13y ago
I'm not sure if I'm reading you right (not my area of expertise), but my understanding of the system is that this does increase total bandwidth. Each cell phone gains access to the entire spectrum of the transmitting source, rather than all phones splitting/sharing the available spectrum. It's as if only a single cell phone was in a given tower cell, and the tower was dedicating all its bandwidth to that single phone.
- lutusp 13y ago
  No, I don't think so. If that were true, the cell system would have to upgrade its throughput. That would make this scheme unattractive to cell companies. I think the reason for all the attention given to this method is because it greatly improves the performance of a cell system without requiring any bandwidth increase. Remember that dropped packets are at times a big limitation on cell system performance, and much existing bandwidth is often wasted on packets that don't get decoded properly because of weak signals. > It's as if only a single cell phone was in a given tower cell, and the tower was dedicating all its bandwidth to that single phone. If the system can adjust the phases of the transmitting antennas to maximize the signal strength to a particular device, for each transmitted packet, then for all practical purposes that's true -- the entire bandwidth of the system really does become available to that particular device, for the duration of each packet meant for it. I don't know the statistics on dropped packets, but I think it's substantial in modern times for high-speed networks. The ratio of dropped packets essentially represents a bandwidth decrease. If that could be eliminated, it would improve throughput, and someone will be tempted to claim that bandwidth has increased. Only sort of.

by lutusp 13y ago

TheEzEzz 13y ago

I'm not sure if I'm reading you right (not my area of expertise), but my understanding of the system is that this does increase total bandwidth. Each cell phone gains access to the entire spectrum of the transmitting source, rather than all phones splitting/sharing the available spectrum. It's as if only a single cell phone was in a given tower cell, and the tower was dedicating all its bandwidth to that single phone.

lutusp 13y ago
No, I don't think so. If that were true, the cell system would have to upgrade its throughput. That would make this scheme unattractive to cell companies. I think the reason for all the attention given to this method is because it greatly improves the performance of a cell system without requiring any bandwidth increase. Remember that dropped packets are at times a big limitation on cell system performance, and much existing bandwidth is often wasted on packets that don't get decoded properly because of weak signals. > It's as if only a single cell phone was in a given tower cell, and the tower was dedicating all its bandwidth to that single phone. If the system can adjust the phases of the transmitting antennas to maximize the signal strength to a particular device, for each transmitted packet, then for all practical purposes that's true -- the entire bandwidth of the system really does become available to that particular device, for the duration of each packet meant for it. I don't know the statistics on dropped packets, but I think it's substantial in modern times for high-speed networks. The ratio of dropped packets essentially represents a bandwidth decrease. If that could be eliminated, it would improve throughput, and someone will be tempted to claim that bandwidth has increased. Only sort of.