Communication system, relay apparatus, receiving apparatus, relay method, receiving method, relay program, and receiving program
US10396872B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2016 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Mar 4, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/067
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A relay apparatus includes: an estimation unit selects a code book number corresponding to a reception SNR range based on an estimated reception SNR value; a soft demodulation unit that performs soft demodulation on a received first signal to detect a likelihood of the received first signal; a first memory unit that stores a first quantization code book showing, for each code book number, a relationship between a quantization parameter and a likelihood quantization bit value; a quantization unit that refers the first quantization code book to obtain a relationship between a quantization parameter and a likelihood quantization bit value that corresponds to the selected code book number, and adaptively quantizes the detected likelihood by using the obtained relationship to obtain a likelihood quantization bit value; and a transmission unit that transmits, to the receiving apparatus, a second signal including the obtained likelihood quantization bit value and the selected code book number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.