Howtosignalprocessing
Direct Sequence Spread Spectrum (DSSS) is a communication system that was developed in the 1980s. It divides the bandwidth of a radio channel into wide frequency bands and transmits these signals over separate frequencies.
What is DSSS technique?
In telecommunications, direct-sequence spread spectrum (DSSS) is a spread-spectrum modulation technique primarily used to reduce overall signal interference. The direct-sequence modulation makes the transmitted signal wider in bandwidth than the information bandwidth.
What is DSSS and FHSS?
Higher signal transmission rate (up to 11 Mbps) FHSS is a robust spread spectrum technique that is suitable to employ in harsh environments. DSSS is a sensitive spread spectrum technique that is influenced by harsh environmental conditions. FHSS is suitable for single point as well as multipoint communications.
How does DSSS transmit data?
DSSS technology breaks down the transmitted stream of data into small pieces across a frequency channel. A redundant bit pattern (known as a chipping code) is generated for each bit transmitted. Generally, the longer the chipping code, the more likely it is that the original transmitted data will be properly received.
Where is DSSS used?
DSSS is a spread spectrum modulation technique used for digital signal transmission over airwaves. It was originally developed for military use, and employed difficult-to-detect wideband signals to resist jamming attempts. It is also being developed for commercial purposes in local and wireless networks.
