IoT Network PHY 复习笔记 南安

Sampling 抽样
Aliasing 混叠

Quantisation 量化 measure discrete amplitude in bits.
Real systems have limited resource in terms of the number of available bits for
representing discrete signals.

Sampling-Frequency Domain 采样频率

Analogue-to-Digital and Digital-to-Analogue Conversion ADC DAC
*** anti-alias lter (AAF)**
*** Reconstruction Filter (RCF)**

Analogue Modulation 模拟调制 want to transmit an analogue signal s(t) over a radio link;

Amplitude Modulation 调幅

Quadrature Amplitude Modulation 正交幅度调制

Channel noise 信道噪声

Mapping to Constellation Pattern