Method, system and device for transmitting downlink pilots
US9172516B2 · kind B2 · utility
2Cited by
13References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2010 |
| Grant date | Oct 27, 2015 |
| Priority date | — |
| Expiry date | Oct 14, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2613
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method, apparatus and system for downlink pilot transmission solve the problem of power differences among OFDM symbols caused by Walsh Codes. The transmission method is that dedicated pilots are transmitted in the manner of code division multiplexing (CDM) or hybrid of CDM and frequency division multiplexing (FDM), wherein the dedicated pilots are configured with orthogonal sequence sets according to a preset frequency-domain granularity and rules on the resources for transmitting the dedicated pilots, and the same orthogonal sequence set is employed for the dedicated pilots in each frequency-domain granularity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.