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.

2021年10月26日 · Direct-Sequence Spread Spectrum (DSSS) is a modulation technique used in telecommunications to reduce interference in signals during transmission. It is a spread spectrum.

2003年2月18日 · Spectral plots illustrate direct-sequence spread-spectrum (DSSS) and frequency-hopping spread-spectrum (FHSS) methods. As spread-spectrum techniques become increasingly popular, electrical engineers outside the field are eager for understandable explanations of the technology.

2024年2月20日 · DSSS is a transmission technology used in wireless communication. This method involves spreading the signal over a larger bandwidth than what is required for simple transmission. The original data signal is combined with a higher rate bit sequence, also known as a chipping code, to increase the signal’s bandwidth.

In this lecture we consider direct-sequence spread-spectrum systems. Unlike frequency-hopping, a direct-sequence signal occupies the entire bandwidth continuously. The signal is obtained by starting with a narrowband signal and directly modulating a high. bandwidth signal.

DSSS is the modulation technique adopted in IEEE 802.11 based WLAN compliant products. In DSSS systems entire system bandwidth is available for each user all the time. Figure-1 depicts DSSS Transmitter and DSSS receiver Block Diagram. PRS …

2022年10月17日 · 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. In this frequency-hopping process, each signal is assigned a different orthogonal sequence of frequencies.

Direct-Sequence Spread Spectrum (DSSS) is a transmission technology used in WLAN (wireless LAN) transmissions where a data signal at the sending station is combined with a higher data-rate bit sequence, or chipping code, that divides the user data according to a spreading ratio.

A direct sequence spread spectrum (DSSS) signal is created by modulating a transmitted signal with a defined sequence of bits having a shorter duration than the data bits or symbols. These bandwidth spreading bits are called chips, and the sequence is called a code.

In direct sequence spread spectrum (DSSS), the transmitter and receiver contain identical psuedo-random sequence generators producing a pseudo-noise (PN) signal. In the transmitter, the input data stream is XORed with the PN signal before transmission.