Method for decoding linear space-time codes in a multiple-antenna wireless transmission system and decoder therefor
US7330519B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 13, 2003 |
| Grant date | Feb 12, 2008 |
| Priority date | — |
| Expiry date | Nov 13, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0618
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An iterative method and a decoder for decoding space-time codes in a communication system with multiple transmission and reception antennae, strikes a compromise between techniques based on interference cancellation algorithms such as BLAST, which show faulty performance concerning error rate based on signal-to-noise ratio and techniques based on maximum likelihood algorithms which are optimal in terms of performance, but highly complex in implantation such as the sphere decoder. Therefor the method includes using a first matrix product between the received signal (Y) and a shaping matrix (Bl), and a second matrix product between a subtraction matrix (Dl) and the vector of the estimated symbols (S1−l) during the preceding iteration. The estimated symbols during the current iteration are generated by a subtractor (9) receiving the results (rl,zl) of the two matrix products. The role of the matrix Dl is to subtract from the current information symbol Sl the interference caused by the other information symbols.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.