Reduced complexity FDM-CPM detector with multiple access interference cancellation
US8798025B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2010 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Feb 24, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/707
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An FDM-CPM multi-user detector (30) jointly detects the received symbols for all users by determining from the received multi-user signal an a-posteriori probability mass function (pmf) of a time-sequence of states and transmitted symbols of all users, by iterative message passing corresponding to a specific factorisation of the pmf. The factorisation involves a combined variable representing possible transmitted symbols and CPM states of each user for each symbol time interval, so as to make the iterative process convergent. Non exponential complexity is enabled by disregarding multiple access interference (MAI) from at least some of the other users. Applications can include hubs for satellite communication ground stations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.