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CBQS stands for "Continuous Bimodal Quantized-State." It is a signal processing technique used in digital communication systems to encode and decode analog signals for transmission over digital channels. CBQS involves quantizing the analog signal into a series of discrete amplitude levels, typically represented by binary digits (bits), and modulating the signal using a continuous-phase modulation scheme, such as phase-shift keying (PSK) or frequency-shift keying (FSK). Unlike traditional digital modulation techniques, which use discrete amplitude levels and phase shifts, CBQS combines elements of both analog and digital modulation, allowing for more efficient use of bandwidth and improved signal-to-noise ratio. By quantizing the signal into a limited number of amplitude levels and modulating it using continuous-phase modulation, CBQS achieves a balance between the robustness of analog modulation and the spectral efficiency of digital modulation, making it suitable for applications where bandwidth efficiency and signal fidelity are critical, such as wireless communication systems, digital audio broadcasting, and satellite communication. Additionally, CBQS provides flexibility in signal design and processing, allowing for adaptive modulation and coding schemes that can be optimized for different transmission environments and channel conditions, ensuring reliable and high-quality communication performance across diverse applications and scenarios.