adolfbasil › 2022年12月16日
Difference between DSSS and FHSS
2022年12月16日
Since the FHSS system relies on different RF carrier frequencies, error bursts are mainly caused by frequency selective fading.
Error Rate: In DSSS, the information bits are distributed over frequency and time planes, thus minimizing the effects of interference and fading. Therefore, DSSS systems are prone to errors, but at a lower level compared to FHSS systems. FHSS produces strong burst errors.mini bluetooth module Although both techniques have errors, it can be seen that the error rate is higher in FHSS than in DSSS systems. Whenever any device approaches the blocking frequency as it hops between channels, the bandwidth of the FHSS system drops. Compared with DSSS, the decoding process of FHSS is easier. Specific algorithms are required in DSSS to establish the connection between sender and receiver.
Network capacity: The transmission rate of DSSS is higher than that of FHSS, DSSS provides a capacity of up to 22 Mbps, while FHSS supports a capacity of up to 3 Mbps.
Reliability: DSSS is more reliable than FHSS systems, bluetooth transceiver module which are less reliable in applications. But for mobile applications FHSS is more energy efficient. Acquisition Time: The time required to convert an analog signal to a digital signal, more in DSSS systems than in FHSS systems.
Error Rate: In DSSS, the information bits are distributed over frequency and time planes, thus minimizing the effects of interference and fading. Therefore, DSSS systems are prone to errors, but at a lower level compared to FHSS systems. FHSS produces strong burst errors.mini bluetooth module Although both techniques have errors, it can be seen that the error rate is higher in FHSS than in DSSS systems. Whenever any device approaches the blocking frequency as it hops between channels, the bandwidth of the FHSS system drops. Compared with DSSS, the decoding process of FHSS is easier. Specific algorithms are required in DSSS to establish the connection between sender and receiver.
Network capacity: The transmission rate of DSSS is higher than that of FHSS, DSSS provides a capacity of up to 22 Mbps, while FHSS supports a capacity of up to 3 Mbps.
Reliability: DSSS is more reliable than FHSS systems, bluetooth transceiver module which are less reliable in applications. But for mobile applications FHSS is more energy efficient. Acquisition Time: The time required to convert an analog signal to a digital signal, more in DSSS systems than in FHSS systems.
