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  2. Phase-shift keying - Wikipedia

    en.wikipedia.org/wiki/Phase-shift_keying

    Phase-shift keying (PSK) is a digital modulation process which conveys data by changing (modulating) the phase of a constant frequency carrier wave.The modulation is accomplished by varying the sine and cosine inputs at a precise time.

  3. Pre-shared key - Wikipedia

    en.wikipedia.org/wiki/Pre-shared_key

    In cryptography, a pre-shared key (PSK) is a shared secret which was previously shared between the two parties using some secure channel before it needs to be used. [ 1 ] Key

  4. Amplitude and phase-shift keying - Wikipedia

    en.wikipedia.org/wiki/Amplitude_and_phase-shift...

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file

  5. TLS-PSK - Wikipedia

    en.wikipedia.org/wiki/TLS-PSK

    TLS-PSK uses symmetric keys, shared in advance among the communicating parties, to establish a TLS connection. There are several reasons to use PSKs: Using pre-shared keys can, depending on the ciphersuite, avoid the need for public key operations. This is useful if TLS is used in performance-constrained environments with limited CPU power.

  6. Modulation order - Wikipedia

    en.wikipedia.org/wiki/Modulation_order

    Examples of these are quadrature phase shift keying and its generalisation as m-ary quadrature amplitude modulation (m-QAM). Because existing computers and automation systems are based on binary logic most of the modulations have an order which is a power of two: 2, 4, 8, 16, etc.

  7. Wikipedia : Peer review/Phase-shift keying/archive1

    en.wikipedia.org/wiki/Wikipedia:Peer_review/...

    This example is the most simple illustration, and a first time user should the concept through this example. Now in the =introduction= mention the need for modulation techniques, and ASK, FSK. Explain about NRZ signals which are used. Now create a new section =types of= . Under this include BPSK, DPSK, DEPSK, QPSK, OQPSK, M-ary PSK, MSK etc.

  8. Constellation diagram - Wikipedia

    en.wikipedia.org/wiki/Constellation_diagram

    A diagram with four points, for example, represents a modulation scheme that can separately encode all 4 combinations of two bits: 00, 01, 10, and 11, and so can transmit two bits per symbol. Thus in general a modulation with N {\displaystyle N} constellation points transmits log 2 ⁡ N {\displaystyle \log _{2}N} bits per symbol.

  9. Frequency-shift keying - Wikipedia

    en.wikipedia.org/wiki/Frequency-shift_keying

    An example of binary FSK. Frequency-shift keying (FSK) is a frequency modulation scheme in which digital information is encoded on a carrier signal by periodically shifting the frequency of the carrier between several discrete frequencies. [1]