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Product Name: Technology : AFBM™ technology
Product Description
Xtendwave's™ modulation and encoding technology provides existing copper
lines with extended broadband rate and reach compared with existing xDSL and
cable modem technologies. Xtendwave's™ patented AFBM™
technology is based on proprietary signal processing techniques that enhance the
spectrum utilization. Xtendwave's™ wavelet-based technology allows for higher
throughput or equivalent rates at farther distances than current xDSL solutions.
Additionally, Xtendwave's™ AFBM’s™ integrated test head
capabilities, determine the "health" condition of the metallic loop without
disrupting traffic. This gives the service provider the ability to prevent
service outages and to quickly and effectively locate and solve problems, which
decreases the need for truck-rolls or any other types of dispatch.
Regardless of whether the interest is in longer reach or higher throughput,
Xtendwave's™ AFBM™ technology helps service providers increase
revenues by making it possible to bring broadband services to customers that
were previously unreachable due to the limitations of the existing technology.
Xtendwave's™ AFBM™ technology also helps reduce operating and
maintenance costs by delivering integrated testing of the copper pair
Understanding AFBM™ Technology
Transmission and Time-Frequency Localization of Symbols
Encoding and modulation comprises the selection of a set of base-band symbols
with the assignment or mapping of data elements, and, therefore, allocation of
energy to these symbols. Symbols, in turn, comprise frequency components having
finite energy levels, which exist for some time duration.
Intuitively, given a finite quantity of energy to allocate to frequency
components, a symbol that is more compact in both frequency and time provides a
better utilization of bandwidth than one that is less so. In addition, a symbol
that has shorter time duration is less susceptible to interference with other
symbols that are transmitted consecutively. And, finally, assigning transmitter
energy to a more compact representation in time and frequency yields a symbol
that is less degraded by noise.
Since there is a fundamental limitation on the concurrent "compaction" of a
symbol's time duration and its frequency content the selection of symbols for
data encoding is of importantance for optimization and performance.
Xtendwave™ believes the generation of symbols and assignment of transmitter
power spectral density by wavelet filter banks to be the best solution to this
problem. Conceptually, AFBM™ represents base-band symbols as
coordinates in wavelet space. AFBM™ wavelet space is spanned by
special wavelets that are spectrally adapted to the channel.
Results
Xtendwave's™ AFBM™ technology results in a transmitter and
receiver design that produces and acquires signals with better spectral
efficiency, temporal efficiency and noise immunity, than those obtained with
Discrete Multi-Tone (DMT) techniques. As a result, the AFBM™
signal has higher bits per second per Hertz at a given BER than DMT.
Figure 2 shows the BER to SNR curves comparing DMT with Xtendwave's™
AFBM™ technology for equal spectral efficiencies of approximately
1.7b/s/Hz. Xtendwave's™ AFBM™ technology is almost two orders
of magnitude better than DMT at a SNR of 6 dB, and almost three orders of
magnitude better than DMT at an SNR of 10 dB.
IP Patents
Xtendwave™ owns the intellectual property and patents to bring its
AFBM™ technology to market.
Issued
- Code division multiple access employing orthogonal filter banks
- Patent #: 7,394,844
- Inversion of channel distortion by adaptive wavelet lifting
- Patent #: 7,362,816
- Optimal filter-bank wavelet modulation
- Patent #: 7,333,665
- Transmission of encrypted messages between a transmitter and a receiver
utilizing a one-time cryptographic pad
- Patent #: 7,327,845
Company Details
Become the company that erases the distance and speed limitations of current
broadband technologies.
To extend the reach of wireless and wireline broadband via AFBM™
technology.
Mangement Team
Morton... more
| More Products of this Company: |
Xtendwave™ Solution for DSL |
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| Suitable For: |
AFBM™ technology - cryptographic pad - filter-bank wavelet modulation - encoding technology - signal processing techniques - mapping of data elements - comprise frequency components -
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