Decoder for viterbi decoding, operation method and electronic device
AssigneeSamsung Electronics Co., Ltd.
InventorsEunyoung SEO, JONGHYUN BAIK, JUNG WOON LEE
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Abstract
A receiver includes a demodulator configured to demodulate a received signal, a despreader configured to, based on a reference chip sequence, perform dispreading on a demodulation signal corresponding to the demodulation of the received signal; and a decoder configured to determine a survivor path for states based on a correlation value corresponding to the despreading, while omitting calculation of a log-likelihood ratio (LLR) for a symbol included in the demodulation signal, and output a decoding signal by tracing back the survivor path.
Claims20
A receiver comprising hardware circuitry that implements:
- a demodulator configured to demodulate a received signal;
- a despreader configured to, based on a reference chip sequence, perform dispreading on a demodulation signal corresponding to the demodulation of the received signal;
- and
- a decoder configured to determine a survivor path for states based on a correlation value corresponding to the despreading, while omitting calculation of a log-likelihood ratio (LLR) for a symbol included in the demodulation signal, and output a decoding signal by tracing back the survivor path.
A method of operating a decoder, the method comprising:
- receiving a correlation value corresponding to despreading for a demodulation signal;
- determining a survivor path for states based on the correlation value, while omitting calculation of a log-likelihood ratio (LLR) for a symbol included in the demodulation signal;
- and
- outputting a decoding signal by tracing back the survivor path.
An electronic device comprising:
- at least one memory configured to store at least one instruction;
- and
- at least one processor configured to execute the at least one instruction, wherein the at least one processor, by executing the at least one instruction, is configured to:
- receive a correlation value corresponding to despreading for a demodulation signal;
- determine a survivor path for states based on the correlation value, while omitting calculation of a log-likelihood ratio (LLR) for a symbol included in the demodulation signal;
- and
- output a decoding signal by tracing back the survivor path.
Dependencies are inferred from the claim text.