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  2. Serial concatenated convolutional codes - Wikipedia

    en.wikipedia.org/wiki/Serial_concatenated...

    The example encoder is composed of a 16-state outer convolutional code and a 2-state inner convolutional code linked by an interleaver. The natural code rate of the configuration shown is 1/4, however, the inner and/or outer codes may be punctured to achieve higher code rates as needed.

  3. Online codes - Wikipedia

    en.wikipedia.org/wiki/Online_codes

    High level view of the use of online codes. The online encoding algorithm consists of several phases. First the message is split into n fixed size message blocks. Then the outer encoding is an erasure code which produces auxiliary blocks that are appended to the message blocks to form a composite message. From this the inner encoding generates ...

  4. Trellis coded modulation - Wikipedia

    en.wikipedia.org/wiki/Trellis_coded_modulation

    The scheme is basically a convolutional code of rates (r, r+1). Ungerboeck's unique contribution is to apply the parity check for each symbol, instead of the older technique of applying it to the bit stream then modulating the bits. [clarification needed] He called the key idea mapping by set partitions. This idea groups symbols in a tree-like ...

  5. Differential pulse-code modulation - Wikipedia

    en.wikipedia.org/wiki/Differential_pulse-code...

    Differential pulse-code modulation (DPCM) is a signal encoder that uses the baseline of pulse-code modulation (PCM) but adds some functionalities based on the prediction of the samples of the signal. The input can be an analog signal or a digital signal .

  6. Viterbi decoder - Wikipedia

    en.wikipedia.org/wiki/Viterbi_decoder

    The commonly used rule of thumb of a truncation depth of five times the memory (constraint length K-1) of a convolutional code is accurate only for rate 1/2 codes. For an arbitrary rate, an accurate rule of thumb is 2.5(K - 1)/(1−r) where r is the code rate. [1]

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    Paramount Plus is currently offering new users a 30-day free trial with a limited-time discount code. Here’s everything you need to know to for claiming the extended Paramount Plus free trial.

  8. TMPGEnc - Wikipedia

    en.wikipedia.org/wiki/TMPGEnc

    TMPGEnc or TSUNAMI MPEG Encoder is a video transcoder software application primarily for encoding video files to VCD and SVCD-compliant MPEG video formats and was developed by Hiroyuki Hori and Pegasys Inc. [3] TMPGEnc can also refer to the family of software video encoders created after the success of the original TMPGEnc encoder. These ...

  9. Differential coding - Wikipedia

    en.wikipedia.org/wiki/Differential_coding

    A differential encoder provides the operation, a differential decoder - the operation. Both differential encoder and differential decoder are discrete linear time-invariant systems. The former is recursive and IIR, the latter is non-recursive and thus FIR. They can be analyzed as digital filters.

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