Adaptive pilot structure to assist channel estimation in spread spectrum systems
US8094737B2 · kind B2 · utility
2Cited by
6References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 25, 2006 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Apr 10, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0228
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention relates generally to methods for generating a dynamic pilot symbol structure in spread spectrum communication systems, and in particular to the use of pilot symbols by user equipment in channel estimation. In one form, the method includes, allocating basic pilot symbols (402) at the beginning of each data chunk (404, 406) and spread over the plurality of sub-carrier frequencies; and selectively replacing data symbols (408) in each data chunk (400) with adaptive pilot symbols (410) according to the speed of the user equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.