Systems and methods for radio frequency calibration exploiting channel reciprocity in distributed input distributed output wireless communications
US-12166546-B2 · Dec 10, 2024 · US
Quantization of channel state information in multiple antenna systems
US8971467B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8971467-B2 |
| Application number | US-201113289957-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 4, 2011 |
| Priority date | May 26, 2006 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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Abstract
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A method of transmission over multiple wireless channels in a multiple antenna system includes storing channel modulation matrices at a transmitter; receiving quantized channel state information at the transmitter from plural receivers; selecting a transmission modulation matrix using the quantized channel state information from the stored channel modulation matrices; and transmitting over the multiple channels to the plural receivers using the selected transmission modulation matrix. In another embodiment, the method includes storing, at one or more receivers, indexes of modulation matrices generated by a capacity enhancing algorithm; upon a selected one of the one or more receivers receiving a transmission from the transmitter, the selected receiver selecting a modulation matrix from the stored modulation matrices that optimizes transmission between the transmitter and the selected receiver; the selected receiver sending an index representing the selected modulation matrix; and receiving the index at the transmitter from the selected receiver.
First claim
Opening claim text (preview).
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows: 1. A method performed by a transmitter having multiple antennas for transmission over multiple wireless channels, the method comprising: storing pre-calculated channel precoding matrices at the transmitter; receiving multiple indices of quantized channel state information at the transmitter from a plurality of receivers; selecting a channel precoding matrix from the…
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Classifications
- H04B7/0452Primary
Electricity · mapped topic
- H04B7/0434Primary
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 US8971467B2 cover?
- A method of transmission over multiple wireless channels in a multiple antenna system includes storing channel modulation matrices at a transmitter; receiving quantized channel state information at the transmitter from plural receivers; selecting a transmission modulation matrix using the quantized channel state information from the stored channel modulation matrices; and transmitting over the …
- Who is the assignee on this patent?
- Mielczarek Bartosz, Krzymien Witold A, Wi Lan Inc
- What technology area does this patent fall under?
- Primary CPC classification H04B7/0452. 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).