|
|
The spread spectrum choice: which system is right for you? (radio frequency data communications) (Narrow Band or Spread Spectrum )
- Article from:
-
Industrial Distribution
- Article date:
-
October 1, 1992
|
Copyright informationCOPYRIGHT 1992 Reed Business Information. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
|
Direct-sequence and frequency-hopping spread spectrum (SS) technologies were evaluated. Direct-sequence techniques divide available operating frequencies into channels and provide for high data transfer rates while frequency-hopping systems constantly changes operating frequencies which reduces interference and increases operating range. Frequency-hopping systems provide up to 100,000 times more narrow-band rejection levels than other SS techniques.
System Approach
The quality of the Spread Spectrum implementation and the type of technique used will determine the vulnerability to interference of each SS product.
The following discussion covers the latest FCC rules on Spread ...