Bandspeed Announces Patent for Improved Wireless Crosstalk Cancellation and Interference Suppression.AUSTIN, Texas -- Bandspeed, a leader in next-generation semiconductor solutions for wireless LAN A local area network that transmits over the air typically in the 2.4 GHz or 5 GHz unlicensed frequency band. It does not require line of sight between sender and receiver. Wireless base stations (access points) are wired to an Ethernet network and transmit a radio frequency over an area access points, today announced that the company has been awarded a patent on improved wireless crosstalk cancellation and interference suppression technology. The patent (#6804313), generated by Dr. Stan Skafidas, co-founder and CTO (Chief Technical Officer) The executive responsible for the technical direction of an organization. See CIO and salary survey. of Bandspeed, describes new techniques which can improve 802.11n signal reliability and clarity, and it is applicable in MIMO (Multiple Input/Multiple Output) Pronounced "my-mo," it is the use of multiple transmitters and receivers (multiple antennas) on wireless devices for improved performance. (multiple-in, multiple-out) systems. The new patented Bandspeed technology provides optimal filter implementation and includes Discrete Multi-Tone Technology (DMT See DSL. ) and Orthogonal Frequency Division Multiplexing See FDM. (communications) frequency division multiplexing - (FDM) The simultaneous transmission of multiple separate signals through a shared medium (such as a wire, optical fibre, or light beam) by modulating, at the transmitter, the separate signals into separable (OFDM (Orthogonal Frequency Division Multiplexing) A digital transmission technique that uses a large number of carriers spaced apart at slightly different frequencies. ) -- key technologies for developing future MIMO OFDM systems. Discrete Multi-Tone and Orthogonal Frequency Division Multiplexing are closely related modulation technologies that have superior performance in frequency selective and dispersive dispersive /dis·per·sive/ (-per´siv) 1. tending to become dispersed. 2. promoting dispersion. channels, compared to their single-carrier counterparts. These technologies also allow source separation to be performed on a tone-by-tone basis. "The patent describes methods to perform source separation, which can be used to enhance standard source separation (MIMO) techniques that separate frequency overlapped streams by also exploiting diversity in time," said Stan Skafidas, co-founder and CTO, Bandspeed. "This allows an extra degree of freedom to help provide a more reliable link or the ability to remove noise. Bandspeed's strong signal processing background was instrumental in developing this technology to help improve 802.11 networks." About Dr. Stan Skafidas Estratios "Stan" Skafidas, Ph.D., is the co-inventor of Adaptive Frequency Hopping, an industry standardized coexistence technology for Bluetooth and 802.11 systems. Dr. Skafidas is a co-founder of Bandspeed and brings extensive communications expertise to his role as CTO. He has previously received a patent on channel equalization In communications, techniques used to reduce distortion and compensate for signal loss (attenuation) over long distances. for multi carrier systems and has a number of patents pending in communication system design, noise mitigation, wireless system design, and signal processing. About Bandspeed Bandspeed provides semiconductor solutions to access point (AP) vendors that dramatically simplify the deployment and ongoing management of wireless LANs. The increasing complexity of the wireless LAN and its expanding range of services require advanced, cost-effective semiconductor solutions for next-generation systems. Bandspeed's proprietary radio frequency (RF) interference mitigation technology provides unsurpassed manageability and scalability for wireless LANs while enabling OEMs to deliver AP solutions with the industry's lowest total cost of ownership. The Gypsy(TM) SDMA (Spatial Division Multiple Access) A satellite communications method that transmits within the same frequency to different receiving zones on earth. It takes advantage of the narrow beams that can be transmitted by the satellite to dish antennas and allows (spatial division multiple access) architecture and Listen and Learn(TM) software are the foundation of the company's AP System-on-a-Chip (AP SOC) solutions. Bandspeed is privately held and headquartered in Austin, Texas. For more information on Bandspeed and its Gypsy technology, please contact the company at 512-358-9000, or visit Bandspeed's Web site at www.bandspeed.com. |
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