Layer mapping method and data transmission method for MIMO system
US-9496986-B2 · Nov 15, 2016 · US
Systems and methods for reducing uplink resources to provide channel performance feedback for adjustment of downlink MIMO channel data rates
US8995547B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8995547-B2 |
| Application number | US-7847005-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 11, 2005 |
| Priority date | Mar 11, 2005 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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Systems and methods for improving the performance of a MIMO wireless communication system by reducing the amount of uplink resources that are needed to provide channel performance feedback for the adjustment of data rates on the downlink MIMO channels. In one embodiment, a method comprises encoding each of a set of data streams according to corresponding data rates, permuting the data streams on a set of MIMO channels according to a full permutation of combinations, transmitting the permuted data streams, receiving the permuted data streams, decoding and determining an SNR for each of the data streams, computing a condensed SNR metric for the set of data streams, providing the condensed metric as feedback, determining a set of individual SNR metrics for the data streams based on the condensed SNR metric, and adjusting the data rates at which the data streams are encoded based on the individual SNR metrics.
First claim
Opening claim text (preview).
What is claimed is: 1. A method implemented in a multiple-input, multiple-output (MIMO) wireless communication system, comprising: transmitting a plurality of data streams from a first station to a second station over a plurality of antennas, wherein blocks of data from each of the plurality of data streams are permuted by transmitting different blocks of data from each data stream over different ones of the plurality of antennas, wherein each data stream is encoded and modulated…
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Electricity · mapped topic
- H04L1/0656Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8995547B2 cover?
- Systems and methods for improving the performance of a MIMO wireless communication system by reducing the amount of uplink resources that are needed to provide channel performance feedback for the adjustment of data rates on the downlink MIMO channels. In one embodiment, a method comprises encoding each of a set of data streams according to corresponding data rates, permuting the data streams o…
- Who is the assignee on this patent?
- Kim Byoung-Hoon, Qualcomm Inc
- What technology area does this patent fall under?
- Primary CPC classification H04L1/0656. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 31 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).