Base station and pi-phase-based multiple-input multiple-output receiving end thereof
A technology of receiving end and input end, applied in the field of multi-input and multi-output receiving end, can solve the problems of high overall power consumption, high circuit power consumption and manufacturing cost, inability to complete 5G high energy efficiency, etc., to achieve high energy efficiency and reduce circuit power consumption and the effect of manufacturing costs
Active Publication Date: 2019-01-29
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
Although the high-resolution ADC is replaced by a 1-bit ADC in this structure, the co-directional and quadrature demodulation technology used in this technology will result in high circuit power consumption and manufacturing costs during DC demodulation and analog combined operations.
At the same time, the use of co-orthogonal demodulation technology will also make the demodulation steps more cumbersome
[0006] To sum up, MIMO technology utilizes more antennas, and adopting the current traditional MIMO receiving end structure will result in higher overall power consumption and higher cost, making massive MIMO technology unable to achieve the high energy efficiency goal proposed by 5G.
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[0038] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0040] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that when an element is referred to as being "connected" or "coupled" to another el...
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The invention discloses a base station and a pi-phase-based multiple-input multiple-output receiving end thereof. The receiving end comprises Nr antennas and also comprises power dividers of which theNr input ends are connected with the Nr antennas; Nr pi-phase radio frequency links of which the input ends are connected with the first output ends of the Nr power dividers; a linear combiner of which the input ends are connected with the second output ends of the Nr power dividers; a classic radio frequency link of which the input end is connected with the output end of the linear combiner; anda baseband signal processing unit which is used for performing channel estimation and multi-user detection according to the output of the pi-phase radio frequency links and the classic radio frequency link. With application of the pi-phase-based multiple-input multiple-output receiving end, the circuit power consumption and the manufacturing cost can be effectively reduced and the objective of high energy efficiency can be achieved.
Description
technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a base station and its π-phase-based multiple-input multiple-output receiving end. Background technique [0002] Multiple-Input Multiple-Output (MIMO) technology improves the reliability of data transmission by employing multiple radio frequency (RF) links at the transmitter and receiver sides capable of supporting multiple data streams. Therefore, MIMO technology has laid the foundation for many modern communication systems such as the fourth generation (4G) long-term evolution (LTE), wireless local area network 802.11ac and so on. Its large-scale evolution (massive MIMO) has the characteristics of supporting hundreds of antennas at the base station, and has been selected as a key physical layer technology for 5G cellular communications. Since spectrum resources below ten gigahertz (GHz) are almost exhausted, millimeter wave (mmWave) technology using GHz ...
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Patent Timeline
Login to View More IPC IPC(8): H04B7/0413H04B7/0426H04B7/06H04B7/08
CPCH04B7/0413H04B7/0426H04B7/0682H04B7/08Y02D30/70
Inventor 王生楚巩译郭琪张琳
Owner BEIJING UNIV OF POSTS & TELECOMM