Unlock instant, AI-driven research and patent intelligence for your innovation.

Energy Efficiency Optimization Method in Heterogeneous Cells

An optimization method and cell-centric technology, applied in diversity/multi-antenna systems, location diversity, power management, etc., and can solve problems such as the lack of research on system energy consumption

Active Publication Date: 2019-03-05
SOUTHEAST UNIV
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the past few decades, the development of communication has focused on capacity and bit error rate, but little research has been done on the energy consumption of the system

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Energy Efficiency Optimization Method in Heterogeneous Cells
  • Energy Efficiency Optimization Method in Heterogeneous Cells
  • Energy Efficiency Optimization Method in Heterogeneous Cells

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0118] The present invention will be further explained below in conjunction with the drawings.

[0119] As attached figure 1 , 2 As shown, in the scenario of a single heterogeneous cell with multiple antennas, the system is an OFDMA system, using 16 subcarriers. There are 1 base station, 1 relay and 16 users in the cell. The distance between the base station and the relay is 400m. The relay serves 4 users, and other users directly communicate with the base station. Users are randomly distributed in the cell. The center frequency of the system is 2.4 GHz. Each base station, relay and end user have two antennas. The maximum transmit power of the base station P Bmax =40dBm, the maximum transmit power of the repeater is P rmax =37dBm,r=1,...,k, the transmit power on each relay antenna is set to MP cr =35dBm, the base station is set to MP c0 =35dBm. Each relay baseband processing power consumption is set to P dr =35dBm, the base station is set to P d0 =35dBm. The radius of the...

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

No PUM Login to View More

Abstract

The invention discloses a heterogeneous cell energy efficiency optimization method comprising the steps that (1) a weighted energy efficiency function is defined to measure the ratio of achievable data rate to the weighted energy consumption of each node in a heterogeneous cell, and an optimization target is simplified by omitting a noise item received by relays so that an optimization target function which is about a transmitting matrix Vrk and a precoding matrix Prk respectively and has concavity is obtained; and (2) as for the simplified optimization target function in the step (1), a second-best solution of the precoding matrix to the relays and users is solved by utilizing a two-step iterative algorithm through fractional programming and KKT conditions so that the ratio of the data rate to the power consumption of the system is enabled to be the maximum, and the performance of the system can be enhanced. The method can be applied to wireless coverage networks of different scenes, and the number of the relays and the number of the users in the heterogeneous cell can be extended.

Description

Technical field [0001] The invention belongs to the technical field of wireless communication, and specifically relates to an energy efficiency optimization method in a heterogeneous cell with multiple antennas. Background technique [0002] In the past few decades, people have focused on capacity and bit error rate in the development of communications, but little research has been done on system energy consumption. With the substantial increase in communication requirements, both academia and industry have begun to pay attention to the energy consumption efficiency of the system. How to improve energy consumption efficiency (unit: bit per joule) will become an important topic in the next generation of wireless communication systems. Summary of the invention [0003] In order to overcome the shortcomings in the prior art, the present invention provides a method for optimizing energy efficiency in heterogeneous cells, so as to maximize the data rate and energy consumption ratio of...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/026H04B7/0456H04W52/36
CPCH04B7/026H04B7/0456H04W52/367
Inventor 俞菲王民锋张皓月黄永明杨绿溪
Owner SOUTHEAST UNIV