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A new design technique of OTA based M-ary modulator and demodulator

机译:一种基于OTA的M元调制器和解调器的新设计技术

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摘要

A new OTA based structure of M-ary modulator & demodulator have been proposed in this paper. Unlike conventional system, A/D D/A converters are not used in the proposed circuit. M-ary ASK modulator and demodulator are synthesized in a systematic and hierarchical manner. As a result, modulation and demodulation with different symbol size, M=2n where n=1 2, 3, 4 can be performed in this proposed methodology. Theoretical analysis of bit error rate for the QASK and M-ary ASK has been done. The M-ary ASK modulator has been simulated using SPICE. The simulation results confirm the reliability and accuracy of the design.
机译:本文提出了一种新的基于OTA的M元调制器和解调器结构。与常规系统不同,在建议的电路中未使用A / D D / A转换器。 Mary ASK调制器和解调器以系统和分层的方式合成。结果,在该提出的方法中可以执行具有不同符号大小M = 2 n ,其中n = 1、2、3、4的调制和解调。对QASK和Mary ASK的误码率进行了理论分析。 Mary ASK调制器已使用SPICE进行了仿真。仿真结果证实了设计的可靠性和准确性。

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