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Communication system, communication device, communication method, and processor

A technology of a communication device and a communication system, applied in the field of communication systems, can solve the problems of not being able to receive non-linear processing signals, not being able to guarantee backward compatibility, etc.

Active Publication Date: 2012-10-03
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in such a communication system, there is a problem that even if a mobile station device that does not perform modular calculations belonging to a different communication system is added to perform spatial multiplexing, such a mobile station device cannot receive and perform After the above-mentioned non-linear processing signal
That is, there is a disadvantage that backward compatibility cannot be guaranteed

Method used

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  • Communication system, communication device, communication method, and processor
  • Communication system, communication device, communication method, and processor
  • Communication system, communication device, communication method, and processor

Examples

Experimental program
Comparison scheme
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no. 1 Embodiment approach

[0066] figure 1 It is a schematic diagram showing the communication system according to the first embodiment of the present invention. This communication system includes one first communication device 11 and N second communication devices 21-1...21-i...21-N. Wherein, N is 2 or an integer greater than 2. The first communication device 11 includes N antennas, and communicates wirelessly with the second communication devices 21-1...21-i...21-N. The second communication devices 21 - 1 . . . 21 -i . . . 21 -N are collectively referred to as the second communication device 21 . In addition, the same applies to descriptions of other embodiments and modifications. The first communication device 11 radio-wave-transmits (transmits) the space-divided N data streams, and these data streams are loaded with different data signals. The second communication device 21 performs radio wave reception (reception) of these data streams.

[0067] Each of the second communication devices 21 incl...

no. 2 Embodiment approach

[0199] First, the second embodiment of the present invention will be described using drawings for a simple example, and then its generalized form will be described.

[0200] exist Figure 13 Among them, one base station device 13 performs wireless communication with two mobile station devices 23-1 and 23-2. The base station apparatus 13 has four antennas 13-1, 13-2, 13-3, and 13-4, the mobile station apparatus 23-1 has antennas 23-1-1, 23-1-2, and the mobile station apparatus 23-2 has Antennas 23-2-1, 23-2-2. The mobile station device 23-1 is the aforementioned THP-incompatible mobile station device, and the mobile station device 23-2 is a THP-compatible mobile station device. The antennas 13-1...13-4 of the base station device 13 perform radio wave transmission of four data streams loaded with different information data signals, of which two data streams are sent to the mobile station device 23-1, and the other two data streams are sent to the mobile station device 23-1, an...

Deformed example 1

[0295]Although the case of a single carrier has been described in the second embodiment, the invention of the second embodiment may be applied to each subcarrier using multiple carriers such as OFDM. That is, as in the modified example of the first embodiment, an OFDM signal modulation unit and an OFDM signal demodulation unit may be newly added for the data streams of the respective data signals. For example, when multiplexing N stations to a mobile station apparatus having M reception antennas, the base station apparatus has an OFDM signal modulation unit and an OFDM signal demodulation unit for each of MN signal streams. In addition, each mobile station apparatus has M OFDM signal modulators and M OFDM signal demodulators.

[0296] In addition, the processor unit 4 of the mobile station device 23-2 can be configured such that a plurality of configurations thereof are realized by a semiconductor device and a program, and a ROM, a PROM, or a flash memory in which a program is...

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Abstract

Disclosed is a transmission-side communication device provided with: a transformation device that performs an equal-value transformation on some of a plurality of data signals; and a weighting device that pre-removes at least some of the interference between spatially multiplexed streams in at least some of the aforementioned plurality of data signals.

Description

technical field [0001] The present invention relates to a communication system, a communication device, a communication method and a processor thereof. [0002] this application claims priority based on Japanese Patent Application No. 2010-007042 for which it applied to Japan on January 15, 2010, and uses the content here. Background technique [0003] In recent years, studies on next-generation mobile communication systems have been conducted in 3GPP (The Third Generation Partnership Project, Third Generation Partnership Project) and the like. In the 3.9th generation LTE (Long Term Evolution) system, in order to efficiently use the frequency band in the downlink to achieve high throughput, MIMO (Multiple Input Multiple Output) is used to spatially multiplex different data using multiple transceiver antennas. , Multiple Input / Multiple Output) technology is being standardized. Furthermore, the standardization of LTE-Advanced in the fourth generation has started at present. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J99/00H04B7/04H04J11/00
CPCH04L25/0204H04J11/0033H04L25/0248H04B7/0465H04L25/0228H04L5/0048H04L5/0023H04B7/0413
Inventor 中野博史小野寺毅藤晋平平田梢
Owner SHARP KK