What does DSFH mean in UNCLASSIFIED

Direct Sequence and Frequency Hopping (DSFH) is a technology used to increase the bandwidth of a wireless signal by utilizing two separate types of modulation. Frequency hopping is a technique that alternates transmission between different frequencies within the chosen spectrum. Direct sequence modulation takes the signal and divides it into many pieces, called chips, that are directly spread over various frequencies in the spectrum

DSFH works by first spreading out individual signals across multiple carrier frequencies using direct sequence spread spectrum modulation. This increases both system range and capacity by allowing more data to be transmitted without interference or crosstalk. The frequency hopping element then adds an additional layer of protection by changing which frequency each chip of data is sent on periodically to avoid interference or crosstalk from other devices using overlapping channels

One of the main benefits of using DSFH is increased security as data transmissions can only be detected when all of their relevant components match up precisely. Additionally, due to its ability to “spread out” data over multiple carrier frequencies at once, it increases overall throughput compared with traditional methods such as frequency division multiple access (FDMA). Finally, it also allows for higher levels of noise immunity since transmitted signals jump from frequency to frequency before being received

In order for a device or network to support DSFH, it must include specialized radio hardware designed for this type of modulation scheme. These radios use onboard algorithms to determine which particular frequency should be used next in order for transmissions between two points to be successful

One potential disadvantage associated with using DSFH is increased complexity which makes implementation more expensive than other types of wireless systems. Additionally, complex operations such as handshaking add latency which may reduce overall effectiveness in certain scenarios where real-time communication is necessary