Howtosignalprocessing
- What is direct sequence spread spectrum modulation?
- How does direct sequence spread spectrum work?
- Which modulation scheme is used by DSSS?
- What is CDMA and DSSS?
What is direct sequence spread spectrum modulation?
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.
How does direct sequence spread spectrum work?
Direct sequence spread spectrum (DSSS) works somewhat differently. With DSSS, the data is divided and simultaneously transmitted on as many frequencies as possible within a particular frequency band (the channel). DSSS adds redundant bits of data known as chips to the data to represent binary 0s or 1s.
Which modulation scheme is used by DSSS?
Which modulation scheme is preferred for direct sequence spread spectrum process? Explanation: Both the modulation scheme BPSK and QPSK can be used for direct sequence spread spectrum process.
What is CDMA and DSSS?
Using CDMA, data is transmitted in the form of noise, making it difficult to jam and also to decipher without the appropriate transmission codes. CDMA uses a Direct Sequence Spread Spectrum (DSSS) property where the transmitter and the receiver must use the same spreading code to transmit data.
