White Noise White noise is uniformly distributed throughout the frequency domain, i.e., this noise has a flat spectrum. The best way to remove white noise from an analog signal is with bandwidth reduction. This is equivalent to reducing the measurement time for a signal and gathering more mea...
This is usually caused by the input picking up and measuring an external noise. Remember that our log amps can have an input bandwidth of as much as 2.5 GHz! The log amp does not know the difference between the wanted signal and the noise. This happens quite a lot in laboratory ...
3-10 An analog signal with a bandwidth of 4.2 MHz is to be converted into binary PCM andtransmitted over a channel, The peak-signal quantizing noise ratio at the receiver output must be at least 55 dB. (a) If we assume thatpe=oand that there is no ISI, what will be the word leng...
To this effect, the figure of merit for the performance of analog communication systems is a fidelity criterion, namely, the signal-to-noise ratio (SNR), whereas the figure of merit for the performance of digital communication systems is the average bit error rate (BER). View chapterExplore ...
signal gain and noise gain. The signal gain is dependent on the amplifier configuration. With noninverting op amp configurations, the gain equation is G = (RF/RG) + 1; with inverting configurations, the gain is G = –RF/RG. The noise gain for both of these configurations is the same,...
This paper presents a low-cost solution for the evaluation of frequency-domain phase noise characteristics for analog/IF signals. The technique is based on 1-bit signal acquisition with a standard digital channel of an Automated Test Equipment (ATE) and a dedicated post-processing algorithm that ...
任何一次信息传输都需要满足最小的信噪比(signal-to-noise,SNR)要求,而增加信噪比能够增加信号的传输距离。信号功率扮演的第二个角色是能够与信道带宽B相互替换地实现信息传输的基本功能;也就是说,为了实现数据传输的既定速率和既定准确率,可以增加B(如果需要减少S),也可以增加S(如果需要减少B)。} { 在脉冲编码调制...
Digital Signal Advantage: Digital signals are reliable and distortion due to noise is negligible. They are flexible, and system upgrade is easier. They can be transported easily and are less expensive. The security is better and can be encrypted and compressed easily. ...
Figure 1: Analog-to-digital signal path with analog filtering (A) or digital filtering using the PIC18LF25K40T-I/MV MCU (B). (Image source: DigiKey) The digital solution, which follows the ADC, uses averaging methods to reduce noise. The addition of filtering into the processor’s code ...
This seems really bad compared to our previous analysis, but there’s a logical explanation. To see the real performance of our signal chain, the channels needs to be shorted together with a proper common mode voltage: Noise = As you can see we are doing really well. We were pessimistic ...