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Ansoft Designer / Ansys Designer 在线帮助文档：

System Simulator >
Discrete Time Analysis >
Discrete Time Overview

Discrete Time Overview

A typical system for discrete-time simulation is comprised of:

• Propagation channels, such as AWGN and Multi-path Fading

• RF functional and electrical-bandpass components for an RF transceiver

• Functional baseband components for transmitter/receiver digital-signal processing

A typical system is illusrated in Figure 1:

Arbitrary transmit/receive topologies may be simulated using discrete time analysis, including:

• Carrier recovery

• Phase locked loops

• Bit synchronization

• Frequency synthesizers

• Symbol/bit-timing recovery

• Arbitrary feedback and digital signal processing topologies.

Discrete time-signal analysis yields system performance (BER/ACPR) and a probe response in the time/spectral/sweep domains at a given node. In addition, discrete time-signal analysis is applicable to systems with functional components alone, as well as to mixed systems that contain both functional and electrical components.

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