Spectrally shaped generalized multitone direct sequence spread spectrum modulation
US7881361B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 2005 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | May 25, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/026
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system (10) for communicating a direct sequence spread spectrum signal, a related transmitter (12), a related receiver (14), and methods associated therewith are provided in various embodiments. A data rate vector, a processing gain vector, a frequency separation vector, and a bit energy vector may be associated with transmitting and/or receiving a direct sequence spread spectrum signal. Each vector has a value associated with each of a plurality of channels associated with subcarriers in the direct sequence spread spectrum signal. A value for at least one of the data rate vector, processing gain vector, frequency separation vector, and bit energy vector for at least one channel is different from another value for the corresponding data rate vector, processing gain vector, frequency separation vector, or bit energy vector for another channel. Having one or more vectors with different values provides a spectrally-shaped generalized multitone (or multicarrier) direct sequence spread spectrum (SSG-MT-DS-SS) modulation scheme.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.