How does direct sequence modulation transmit data?

Direct sequence modulation transmits data by breaking the data into separate parts and spreading these parts over multiple frequencies. This technique is known as spread spectrum technology, where each bit of information is represented by multiple bits in a higher-dimensional space. In direct sequence spread spectrum (DSSS), the original data signal is multiplied by a pseudorandom noise sequence, which increases its bandwidth and spreads the signal across a range of frequencies. This approach allows for better resistance to interference and enhances security since the signal is harder to detect or jam.

In the context of communication, spreading the signal over multiple frequencies provides advantages in terms of improving signal integrity and reducing the chances of data loss due to interference or noise. This characteristic is essential, especially in environments with significant potential for signal disruption.