Übersetzung für "Convolutional code" in Deutsch

A node represents a state of the memory of the convolutional code.

This is similar to the termination of a convolutional code.

In the present case, however, the employment of a convolutional self-orthogonal code is of special interest.

In punctured coding, single bits are deleted at intervals in a low-rate convolutional code.

This is a convolutional code with memory v, terminated by uknown symbols.

In this context, the error-correcting code may be a block code or a convolutional code.

This is a consequence of the known starting states and final states (if terminated) of the convolutional code.

A convolutional self-orthogonal code (CSOC), a Reed-Solomon Code or, respectively, a block code having Lee metrics are used for error correction in these examples.

This holds true for the concatenation of two codes in comparison with a single convolutional code with a rate of 1/3 and the same receiver complexity.

This could be a Viterbi equalizer, a Viterbi demodulator (for example for modulation processes of constant envelopes (CPM) or for trellis-coded modulation (TCM)), or a Viterbi decoder for an inner convolutional code.

A convolutional code of the rate 1/2 with a memory v=3 was selected as outer code (see Table 1).

In a conventional convolutional code of the rate 1/N, exactly N channel bits are transferred for each arriving information bit; if not all information bits are transferred, but suitable channel bits are erased or "punctured", the result is a code with the rate K/N.

In the coded version the k successive bits form the uncoded intermediate sequence Z, which is converted by means of a (n,k) convolutional code into the coded intermediate sequence Z' which is to be transmitted.

The intermediate sequence Z and the telegram signal T are either uncoded or are coded by means of a (n,k) convolutional code, and are then denoted as Z' and T'.

Then, the DAB-channel encoding is effected with a convolutional code 1/2 so that a data stream CH=2.4 Mbit/s is available at the output of the channel encoder 2.

To this end, a convolutional code is used for encoding purposes in the channel encoder, according to which code a plurality of data elements of the encoded data sequence are generated by means of different logic operations of the bit to be encoded and of the m bits preceding the bit to be encoded.

In the illustrated example, the number of cells K=5, K being the "constraint length", which influences the type of convolutional code employed.

FIG. 2 shows diagrammatically a known woven code comprising the concatenation of an outer and inner convolutional code without buffer.

However, the principal of the disclosure is applicable even if a convolutional code is used as the error protection code, i.e., for example, if a turbo code is used, wherein the payload data and error protection data are then contained in a joint field.

This first transmitted data block is received by a transmitter/receiver device, i.e. the device under test (DUT), and decoded according to the coding scheme (“convolutional code”) of the transmitter/receiver station.