Howtosignalprocessing
- Is CDMA a DSSS?
- Does CDMA use FHSS?
- What is CDMA in satellite communication?
- What is spreading and despreading in CDMA?
Is CDMA a DSSS?
CDMA uses a Direct Sequence Spread Spectrum (DSSS) property where the transmitter and the receiver must use the same spreading code to transmit data.
Does CDMA use FHSS?
FHSS is used to avoid interference, to prevent eavesdropping, and to enable code-division multiple access (CDMA) communications.
What is CDMA in satellite communication?
CDMA (Code-Division Multiple Access) refers to any of several protocols used in second-generation (2G) and third-generation (3G) wireless communications. As the term implies, CDMA is a form of multiplexing, which allows numerous signals to occupy a single transmission channel, optimizing the use of available bandwidth.
What is spreading and despreading in CDMA?
A spreading sequence is a binary sequence that appears random but can be reproduced in a deterministic manner by intended receivers. These spreading sequences are used to encode and decode a user's signal in asynchronous CDMA in the same manner as the orthogonal codes in synchronous CDMA (shown in the example above).
