Lead code detecting method of subscriber station receiver
A detection method and preamble technology, which are applied in the directions of multi-frequency code systems, multiplexing communication, orthogonal multiplexing systems, etc., can solve the problem of inability to detect downlink preambles and reduce the applicability of SS receivers, etc. problems, to achieve the effect of facilitating software implementation, improving accuracy, and reducing the amount of detection operations
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0025] Based on the characteristics of the 802.16e downlink signal, the present invention proposes an effective preamble detection and synchronization method. The method uses the good autocorrelation of the preamble and the cyclic prefix (CP) to accurately detect the preamble and realize the symbol at the same time. Timing synchronization and frequency offset estimation, and has high computational efficiency, very suitable for implementation on digital signal processors (DSP) or embedded microprocessors.
[0026] The following steps are shown in the flowchart of FIG. 1.
[0027] An OFDMA symbol consists of two parts, a cyclic prefix (hereinafter referred to as CP) and a useful data part. The length of the cyclic prefix (cp_len) is generally pre-defined by the system, and the CP is a data copy of useful data whose final length is cp_len. Coarse synchronization timing is completed by the CP correlation of OFDMA symbols. The baseband data received by the antenna is sent to the baseba...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap