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Direct Sequence Spread Spectrum Modulation (DSSS)
This lecture covers the basics of Direct Sequence Spread Spectrum Modulation (DSSS), including symbol rate, pulse shaping, wideband vs. narrowband, and DSSS mechanisms. It explains the concept of repetition bits, symbol rate, pulse shaping, and the relationship between bandwidth and symbol rate. The lecture also delves into DSSS mechanisms, such as the use of spreading codes and the process of demodulation. Additionally, it discusses the practical aspects of DSSS, including the modulation and demodulation processes, as well as the impact of different parameters on the communication system performance.