A programmable DSP engine for high-rate modems

A programmable DSP engine for high-rate modems

The authors discuss a general adaptive FIR (finite impulse response) filter (GAFF) which provides the signal-processing functions required for high data rates and supports a simple frequency-multiplexed core for ADSL (asymmetric digital subscriber line) operations, or a full-duplex full-feature unit...

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Bibliographic Details
Published in:1992 IEEE International Solid-State Circuits Conference Digest of Technical Papers pp. 222 - 223
Main Authors: Amrany, D., Gadot, S., Dimyan, M.
Format: Conference Proceeding
Language:English
Published: IEEE 1992
Subjects:
Adaptive filters
Decision feedback equalizers
Digital filters
Digital signal processing
DSL
Echo cancellers
Engines
Finite impulse response filter
Frequency
Modems
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Summary:The authors discuss a general adaptive FIR (finite impulse response) filter (GAFF) which provides the signal-processing functions required for high data rates and supports a simple frequency-multiplexed core for ADSL (asymmetric digital subscriber line) operations, or a full-duplex full-feature unit that includes echo cancellation, decision feedback equalizer, and Tomlinson precoding. In addition to FIR operations, the device incorporates binary functions to complete all real-time modem operations, providing a complete system solution and eliminating external support circuitry. For low rate and low complexity, a single device can implement all the modem functions, while at the high end, a few devices are needed to share the load.< >
ISBN:9780780305731
0780305736
DOI:10.1109/ISSCC.1992.200492