M-ary-modulation-capable equalizing processing apparatus, received signal processing system, receiver and M-ary-modulation-capable equalizing processing method
US7224753B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 25, 2005 |
| Grant date | May 29, 2007 |
| Priority date | — |
| Expiry date | Jan 19, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03401
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An M-ary-modulation-capable equalizing processing apparatus, received signal processing system, receiver and M-ary-modulation-capable equalizing processing method enabling reduction in processing amount of the equalizing processing while improving bit error rate characteristics. M-ary-modulation-capable equalizing processing apparatus 6 has phase rotation sections 601 to 604, equalizing processing sections 611 to 614 and soft-decision value determining section 620. Phase rotation sections 601 to 604 rotate phases of signal Sr1 to Sr4. The signals Sr1 to Sr4 are obtained from a received signal Sr that is converted into a digital baseband signal and that has information amounts “3” per symbol, and have an information amount of 1 bit per symbol. Equalizing processing sections 611 to 614 perform equalizing the processing on the signals Sr1 to Sr4 to output soft decision value Spd1 to Spd4. Based on the soft decision value Spd1 to Spd4, soft-decision value determining section 620 determines a soft decision value Ssd.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.