Direct Sequence Spread Spectrum (DSSS) is a modulation technique used in wireless communication to spread a signal over a wider bandwidth than the minimum required. This is achieved by multiplying the data signal with a pseudo-random noise sequence, known as a spreading code. The result is a signal that is less susceptible to interference and jamming, making it more reliable for transmission. DSSS is commonly used in various applications, including Wi-Fi networks and GPS systems. By spreading the signal, DSSS allows multiple users to share the same frequency band without significant interference, enhancing the overall capacity and efficiency of the communication system.