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[Other] 58059 DL : 0: n the telecommunications, direct-sequence spread spectrum (DSSS) is a spread spectrum modulation technique. Spread spectrum systems are such that they transmit the message bearing signals using a bandwidth that is in excess of the bandwidth that is actually needed by the message signal. This spreading of the transmitted signal over a large bandwidth make the resulting wideband signal appear as a noise signal which allows greater resistance to intentional and unintentional interference with the transmitted signal
Date : 2025-07-16 Size : 12kb User : farid/hn
[Software Engineering] 111 DL : 0: 直序扩频通信系统仿真框图可知，系统主要组成分为七个部分，分别为信源部分、扩频部分、调制部分、信道传输部分、解调部分、解扩部分和信宿部分。-The main components of the system are divided into seven parts: the source part, the spreading part, the modulation part, the channel transmission part, the demodulation part, the despreading part and the sink part respectively.
Date : 2025-07-16 Size : 116kb User : 唐迎春

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