Scheme for transmitting reference signal in wireless communication system
US-2015341942-A1 · Nov 26, 2015 · US
Cyclic shift delay detection using a channel impulse response
US8971428B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8971428-B2 |
| Application number | US-201213624646-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 21, 2012 |
| Priority date | Sep 21, 2012 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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Abstract
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Systems, apparatus and methods for determining a cyclic shift diversity (CSD) mode are presented. Examples use a channel impulse response (CIR) to determine a current CSD mode. Specifically, a channel impulse response from an orthogonal frequency-division multiplexing (OFDM) symbol, which forms CIR samples. The CIR samples are examined to find a local maxima. A current CSD mode may be selected based on the local maxima found in the CIR samples.
First claim
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What is claimed is: 1. A method for finding cyclic shift diversity (CSD), the method comprising: receiving, at a transceiver, an orthogonal frequency-division multiplexing (OFDM) symbol transmitted using a particular CSD mode; computing a channel impulse response (CIR) of the ODFM symbol to form CIR samples; determining local maxima in the CIR samples; and selecting a CSD mode being used based on the local maxima. 2. The method of claim 1 , wherein com…
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Electricity · mapped topic
- H04B7/0671Primary
Electricity · mapped topic
- G01S5/0273Primary
Physics · mapped topic
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- What does patent US8971428B2 cover?
- Systems, apparatus and methods for determining a cyclic shift diversity (CSD) mode are presented. Examples use a channel impulse response (CIR) to determine a current CSD mode. Specifically, a channel impulse response from an orthogonal frequency-division multiplexing (OFDM) symbol, which forms CIR samples. The CIR samples are examined to find a local maxima. A current CSD mode may be selected …
- Who is the assignee on this patent?
- Lakhzouri Abdelmonaem, Curticapean Florean, Qualcomm Inc
- What technology area does this patent fall under?
- Primary CPC classification H04B7/0671. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).