Method and apparatus using pseudo-inverses of linear transformations in multi-carrier modulation receivers and transceivers
US6956815B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 16, 2001 |
| Grant date | Oct 18, 2005 |
| Priority date | — |
| Expiry date | Mar 27, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03605
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Many communications protocols involve a collection of communication channels collectively forming the dimensions of a finite dimensional vector space, of which at any point in time, only a subset of those channels or dimensions must be received. Messages on these channels are time progressions in at least the actively used dimensions of the vector space which have been linearly transformed to create a sample list transported across at least one physical transport layer to a receiver. The linear transform may further include an estimation of the effects of the transport of the sample list across the one or more physical layers to the receiver. This invention uses at least portions of pseudo-inverses of the linear transform in various ways within receivers and receiver portions of transceivers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.