Pilot signal adapting method, base station and user equipment for MIMO (Multiple-Input Multiple-Output) system
A technology of pilot signal and adaptation method, which is applied in the field of pilot signal adaptation, base station and user equipment, and can solve problems such as low resolution, unsuitability for large-scale MIMO system, and burden of MIMO system
Active Publication Date: 2017-06-30
ALCATEL LUCENT SHANGHAI BELL CO LTD
View PDF5 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, this deployment is not suitable for massive MIMO systems, mainly because the large number of high-resolution ADCs deployed results in high power consumption and high hardware costs, thus burdening the implementation of massive MIMO systems. An alternative is to deploy low resolution (eg 1-bit) ADCs in massive MIMO systems
However, since the channel estimation in the Time Division Duplex (TDD) system is completed through uplink training, and in order to avoid pilot pollution, different user equipment (UE) will send orthogonal training with a training length equal to the number of UEs. The sequence (regular training sequence) is given to the eNB, so when a low-resolution ADC is deployed in the MIMO system, serious quantization errors will cause the quality of the signal received by the eNB to degrade significantly
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0027] Although the exemplary embodiments may have various modifications and alternative forms, some of them are shown by way of example in the drawings, and will be described in detail here. However, it should be understood that it is not intended to limit the exemplary embodiments to the specific forms disclosed, on the contrary, the exemplary embodiments are intended to cover all modifications, equivalents, and alternatives falling within the scope of the claims. The same reference numerals always refer to the same elements in the description of each figure.
[0028] Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowchart describes the operations as sequential processing, many of the operations can be implemented in parallel, concurrently, or simultaneously. In addition, the order of operations can be rearranged. The processing may b...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
Disclosed are a pilot signal adapting method, base station and user equipment for an MIMO (Multiple-Input Multiple-Output) system. The pilot signal adapting method comprises the steps of: sending downlink signaling including a sequence indicator to user equipment (UE); and receiving a pilot signal sent by the UE according to the sequence indicator in the downlink signaling. The base station actively sends the downlink signaling including the sequence indicator to the UE, so that the user sends the pilot signal according to the sequence indicator to eliminate the influence of a low-resolution ADC (Analog to Digital Converter) configured at the eNB on the channel estimation performance, and the given large-scale MIMO alternative scheme, i.e., configuring the low-resolution ADC at the eNB, is realized.
Description
Technical field [0001] The present invention relates to the field of wireless communication, and in particular to a pilot signal adaptation method, base station and user equipment of a MIMO system. Background technique [0002] Massive MIMO (Multiple-input Multiple-Output, multiple-input multiple-output) is developed from the traditional MIMO technology. By using massively multiple antennas at the base station (eNB) and simultaneously serving multiple users, the channel rate Brings a great improvement and is a key support for 5G communication systems. [0003] In the existing MIMO system, each antenna of the eNB is connected to a pair of high-resolution (for example: 14-bit) Analog to Digital Converter (ADC) to convert the analog signal into a more convenient processing Digital signal. However, this kind of deployment is not suitable for massive MIMO systems, mainly because the large number of high-resolution ADCs deployed leads to high power consumption and high hardware costs, ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L25/02
CPCH04L5/0051H04L25/0228
Inventor 刘斌越吴克颖佘锋
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD