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Radio communication device and radio reception method

A wireless communication device and technology for receiving power, applied in the direction of preventing/detecting errors through diversity reception, radio transmission systems, devices dedicated to receivers, etc., can solve problems such as receiving power fluctuations, and achieve the goal of reducing multi-path attenuation effect of influence

Inactive Publication Date: 2010-07-28
KYOCERA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When such multipath fading occurs, the received power fluctuates at the receiving antenna end

Method used

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  • Radio communication device and radio reception method
  • Radio communication device and radio reception method
  • Radio communication device and radio reception method

Examples

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Embodiment Construction

[0061] Embodiments of the present invention will be described with reference to the drawings.

[0062] figure 1 is a functional block diagram illustrating a schematic configuration of a main part of a wireless communication device according to an embodiment of the present invention. The wireless communication device has a plurality of antennas 11-1 to 11-M, receiving units 12-1 to 12-M for processing signals received by the antennas 11-1 to 11-M, and receiving units for processing signals received from the receiving units. A combining unit 13 for diversity combining the outputs of 12-1 to 12-M, a decoding unit 14 for decoding a combined received signal, and a control unit 15 for controlling combining processing performed by the combining unit 13.

[0063] The wireless communication according to this embodiment adopts an adaptive modulation scheme. Under the adaptive modulation scheme shown, the communication is performed by switching the modulation scheme according to the ra...

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Abstract

A radio communication device having a plurality of antennas (11-1 to 11-M) diversity-synthesizes reception signals of antennas (11-1 to 11-M) and performs communication while switching the modulation method in accordance with the radio condition. The radio communication device includes: first synthesis units (23, 24) which synthesize reception power of the antennas (11-1 to 11-M) according to a first algorithm; second synthesis units (21-1 to 21-M, 22, 23) which synthesize reception power of the antennas (11-1 to 11-M) according to a second algorithm different from the first algorithm; and a control unit (15) which selects the first synthesis units (23, 24) or the second synthesis units (21-1 to 21-M, 22, 23) according to the modulation method so as to synthesize reception power of the antennas (11-1 to 11-M). Thus, when performing radio communication by using the adaptive modulation method, it is possible to reduce the affect of multi-path fading accompanied by a delayed arriving wave in a different modulation method even if the number of reception antennas is small so as to always maintain a stable reception state.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and benefit from Japanese Patent Application No. 2007-223182 filed on August 29, 2007, the entire disclosure of which is hereby incorporated by reference. technical field [0003] The present invention relates to a wireless communication device and a wireless receiving method capable of diversity combining received signals and performing communication by switching modulation schemes according to radio conditions using a plurality of antennas. Background technique [0004] Known as a mobile wireless communication system, a system employing an adaptive modulation scheme uses multiple antennas to increase reception gain to improve reception performance at a base station or mobile terminal, and to switch modulation schemes according to radio conditions to effectively increase communication speed . Among multiple modulation schemes including multi-level modulation schemes and coded modulati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/08
CPCH04B7/0854H04B7/0857H04L25/03012H04B7/0848H04L1/0003H04L1/06H04L1/0036
Inventor 草野吉雅
Owner KYOCERA CORP
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