Howtosignalprocessing
- What is processing gain in spread spectrum?
- What is processing gain in CDMA?
- What are the two types of spread spectrum techniques?
- What is the difference between DSSS and FHSS?
What is processing gain in spread spectrum?
The processing gain of a spread-spectrum (SS) system is generally defined as the ratio between the transmission bandwidth and data bandwidth, and is a measure of its interference rejection capability.
What is processing gain in CDMA?
A CDMA signal is generated by spreading the code symbols by a wideband code sequence that is produced at a rate of 1.2288 Mcps (Megachips per second). This spreading of the information signal provides a substantial gain that is referred to as Processing Gain.
What are the two types of spread spectrum techniques?
There are two predominant techniques to spread the spectrum: 1) Frequency hoping (FH), which makes the narrow band signal jump in random narrow bands within a larger bandwidth. 2) Direct sequence (DS) which introduces rapid phase transition to the data to make it larger in bandwidth.
What is the difference between DSSS and FHSS?
The DSSS method of modulation has a higher rate of transmission than the FHSS method. The implementation of DSSS at radio frequencies with a high transmission rate costs less than implementing FHSS. At a given transmitting power, FHSS offers higher power spectral density than DSSS.
