Modular home-networking communication system and method using disparate communication channels
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United States of America Patent
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Jun 5, 2001
Grant Date -
N/A
app pub date -
Apr 3, 1998
filing date -
Apr 3, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A modular home-networking communications system which uses a physical layer modulation scheme suitable for transmission in both RF and powerline communication channels. The modulation system is based on direct-sequence spread-spectrum (DS-SS) using Barker codes to spread the information symbols, which provides both operation at low signal to noise ratio and very good resistance to time dispersion distortion due to the excellent autocorrelation properties of the Barker codes. This type of modulation system is ideal for the powerline communications channel since it spreads the transmission power over a wide range of frequency, lowering the power spectral density enough that it will provide long distance coverage without violating FCC radiated emission and conducted power regulations.
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