Dev.SN

Radio Tech Could Halve Bandwidth Needs

posted by Cactus on Thursday February 27 2014, @05:30PM   
from the can-you-hear-me-now? dept.

AnonTechie writes:

According to an article from The Register, a team from Stanford University has patented technology that could halve the bandwidth that a mobile provider needs.

Operating under the name Kumu Networks, they are showcasing tech which they claim would exactly double throughput. Radio equipment (such as mobile phones) would be able to send and receive on the same frequency through a process similar to noise-cancelling headphones; by knowing what a base station is transmitting it can cancel out the information from the very faint signal it receives.

• Re:where you at old technology Re:where you at old technology (Score: 2, Informative) by sfm on Thursday February 27 2014, @06:21PM

  by sfm (675) on Thursday February 27 2014, @06:21PM (#8144)

  Single Side Band (SSB) was intended to reduce bandwidth (or more importantly, increase power) of the desired signal by removing redundant and unneeded information. For AM transmission, the carrier and both sidebands are typically sent. The lower sideband is a mirror of the upper sideband and the carrier is is simply a placeholder. By removing one sideband and suppressing the carrier, more power could be applied to the remaining sideband. The system was perfected in the 40's and 50's and works well.

  Cellphone communication is significantly different from this and cannot benefit from using it. (Unfortunately)

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• Re:where you at old technology (Score: 1) by EvilJim on Thursday February 27 2014, @06:31PM

  by EvilJim (2501) on Thursday February 27 2014, @06:31PM (#8148)

  Thanks, if I had mod points this hour you'd get one. I've still got an Aussie 27mhz SSB cb sitting in a box at home, never did get around to converting it to NZ 26mhz

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