MC-CDMA system, transmitter and receiver
US8054866B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2007 |
| Grant date | Nov 8, 2011 |
| Priority date | — |
| Expiry date | Nov 30, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J2013/165
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A MC-CDMA transmitter and an MC-CDMA receiver are provided, which use a novel orthogonal spreading code that allows an effect by a delay wave to appear in only a specific user. An MC-CDMA system includes: a transmitter which multiplies a transmitting signal by a sinusoidal signal which has an amplitude of r and is orthogonal as a result that the frequency periods are different among users, in a frequency domain to be spread and split into orthogonal sub-carriers, and multiplexes the sub-carriers; and a receiver for receiving a transmitting signal from the transmitter in a manner that a sinusoidal signal, which has an amplitude of r and is orthogonal as a result that the frequency periods are different among users, is multiplied by the transmitting signal in a frequency domain, and the resultant is inversely spread.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.