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  2. Friis formulas for noise - Wikipedia

    en.wikipedia.org/wiki/Friis_formulas_for_noise

    where is the overall noise factor of the subsequent stages. According to the equation, the overall noise factor, F r e c e i v e r {\displaystyle F_{\mathrm {receiver} }} , is dominated by the noise factor of the LNA, F L N A {\displaystyle F_{\mathrm {LNA} }} , if the gain is sufficiently high.

  3. Communication noise - Wikipedia

    en.wikipedia.org/wiki/Communication_noise

    Environmental noise can be any external noise that can potentially impact the effectiveness of communication. [2] These noises can be any type of sight (i.e., car accident, television show), sound (i.e., talking, music, ringtones), or stimuli (i.e., tapping on the shoulder) that can distract someone from receiving the message. [3]

  4. Models of communication - Wikipedia

    en.wikipedia.org/wiki/Models_of_communication

    Shannon–Weaver model of communication [86] The Shannon–Weaver model is another early and influential model of communication. [10] [32] [87] It is a linear transmission model that was published in 1948 and describes communication as the interaction of five basic components: a source, a transmitter, a channel, a receiver, and a destination.

  5. Signal-to-noise ratio - Wikipedia

    en.wikipedia.org/wiki/Signal-to-noise_ratio

    But in signal processing and communication, one usually assumes that = [3] so that factor is usually not included while measuring power or energy of a signal. This may cause some confusion among readers, but the resistance factor is not significant for typical operations performed in signal processing, or for computing power ratios.

  6. Lasswell's model of communication - Wikipedia

    en.wikipedia.org/wiki/Lasswell's_model_of...

    A model of communication is a simplified presentation that aims to give a basic explanation of the process by highlighting its most fundamental characteristics and components. [16] [8] [17] For example, James Watson and Anne Hill see Lasswell's model as a mere questioning device and not as a full model of communication. [10]

  7. Friis transmission equation - Wikipedia

    en.wikipedia.org/wiki/Friis_transmission_equation

    Friis' original idea behind his transmission formula was to dispense with the usage of directivity or gain when describing antenna performance. In their place is the descriptor of antenna capture area as one of two important parts of the transmission formula that characterizes the behavior of a free-space radio circuit.

  8. Source–message–channel–receiver model of communication

    en.wikipedia.org/wiki/Source–message–channel...

    The SMCR model is usually described as a linear transmission model of communication. [4] [17] Its main focus is to identify the basic parts of communication and to show how their characteristics shape the communicative process. In this regard, Berlo understands his model as "a model of the ingredients of communication". [24]

  9. Noise figure - Wikipedia

    en.wikipedia.org/wiki/Noise_figure

    The noise factor is defined as the ratio of the output noise power of a device to the portion thereof attributable to thermal noise in the input termination at standard noise temperature T 0 (usually 290 K). The noise factor is thus the ratio of actual output noise to that which would remain if the device itself did not introduce noise, which ...