A new approach for direct sequence
spread spectrum is introduced in this paper to generate the wideband signal by circularly shifting the spreading code by n places where n represents the value of an acquired byte of the information signal.
A more cost-effective approach is using a TDMA-based direct sequence
Spread Spectrum. In a TDMA-based network only one remote at a time will transmit.
Ngan, "
Spread spectrum image watermarking based on perceptual quality metric," IEEE Transactions on Image Processing, vol.
The DSSS-OFDM method, which combines direct sequence
spread spectrum and OFDM, is a robust communication scheme for cruising sensor network in confined underwater space.
This is mainly due to
spread spectrum distortions characterized by their asymmetry (with respect to the unmodulated [f.sub.sw] harmonics), as it can be observed, e.g., from Fig.
Hedy Lamarr never made a cent from inventing
spread spectrum. But today, various forms of
spread spectrum are among the most important concepts in wireless communications, and her protocol is now imbedded in numerous wireless products.
technologies such as
spread spectrum have eliminated the problem of
Renishaw's RMP60 machine tool probe features frequency-hopping
spread spectrum (FHSS) radio transmission, an industry first.
RO4350i[TM] laminate is a glass reinforced hydrocarbon/ceramic thermoset laminate (not PTFE) designed for performance sensitive, high volume commercial applications, such as cellular base station antennas and power amplifiers;
spread spectrum communication systems; automated test equipment; high speed backplanes and line cards; and high frequency automotive electronics.
ALISON McLAREN, of Glasgow, asks: 'Which famous actress stunned the Hollywood community when they discovered she was the inventor of
Spread Spectrum, the basis for cell phones and other wireless communications systems such as the internet?' Obviously more than a pretty face.
The 900 MHz ISM license-free units assure complete security, with frequency-hopping
spread spectrum communications technology.
Along with providing cable-free operation and a
spread spectrum radio, the system adds dual-constellation tracking to increase coverage.