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

Power oontrol method in communication system

A power control and communication system technology, applied in transmission control/equalization, power management, wireless communication, etc., can solve problems such as poor reverse channel performance

Inactive Publication Date: 2004-09-29
GOOGLE TECH HLDG LLC
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

this process of causing a remote unit to adjust power is delayed until the third time slot after the base station receives a power control group, which may have an adverse effect on reverse channel performance

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
  • Power oontrol method in communication system
  • Power oontrol method in communication system
  • Power oontrol method in communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] 1 is a block diagram of a base station receiver 100 for receiving a power control group transmitted by a remote unit in accordance with the preferred embodiment of the present invention. The quadrature coded spread spectrum digital signal 130 received by the receiving antenna 131 is amplified by the receiver 132 and despread and demodulated 136 into an in-phase component 140 and a quadrature component 138 . The despread digital sample components 138, 140 are then partitioned into a series of groups of signal samples of predetermined length (e.g., a series of 64-sample-length groups), which are respectively input in the form of fast Hadamard transformers 142, 144 , so that the two orthogonally encoded signal components are despread into a plurality of despread signal components 146 and 160, respectively (for example, 64 despread signal components are generated when the input is a 64-sample length group Signal). In addition, the output signal 146, 160 of each transformer...

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

Reverse channel power control in a CDMA system is accomplished by measuring a power-control group transmitted from a remote unit (403) and determining a transmission time of a next power-control bit. The measurement of the power-control group is discontinued (405) based on the transmission time of the power-control bit and a round trip delay between the base station and the remote unit in order to transmit the power-control bit (419) to the remote unit in the next time slot.

Description

[0001] The present invention is a divisional application of the invention patent application filed on November 14, 1997 with the application number 97190202.X and the title of the invention entitled "Power Control Method and Device in Communication System". technical field [0002] The present invention relates to communication systems and, in particular, to power control in communication systems. Background technique [0003] It is well known that some communication systems employ various power control methods to control the transmitted energy of remote units. One type of communication system employing power control is a spread spectrum communication system. Power control in a spread spectrum system has two main functions. First, since the signals of each remote unit in a spread spectrum system are usually transmitted at the same frequency, the noise accompanying the received signal (inversely proportional to the bit energy Eb / no of the unit noise density, which is defined...

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 Applications(China)
IPC IPC(8): H04B1/04H04B7/005H04B7/26
CPCH04W52/58
Inventor 欧格内·J·布鲁克尔特
Owner GOOGLE TECH HLDG LLC