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Device for using OFDM diversity reception, OFDM receiving circuit and OFDM reception method

一种接收装置、乘法的技术，应用在通过分集接收来防止/检测错误、频率分集、空间发射分集等方向，能够解决不能准确可靠地解调数据、无法得到足够的接收品质等问题

Inactive Publication Date: 2005-05-04
CASIO COMPUTER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the above-mentioned conventional diversity method, since diversity is performed based on signals in a time zone, there is a problem that sufficient reception quality cannot be obtained especially in multipath conditions that often occur in buildings in cities, and accurate and reliable reception cannot be obtained. The problem of demodulating the received data

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  • Device for using OFDM diversity reception, OFDM receiving circuit and OFDM reception method
  • Device for using OFDM diversity reception, OFDM receiving circuit and OFDM reception method
  • Device for using OFDM diversity reception, OFDM receiving circuit and OFDM reception method

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Embodiment Construction

[0014] Embodiments of the present invention will be described below with reference to the accompanying drawings. In addition, in the following description, the specificity of each detail and the illustration of other signs such as examples, numerical values, and character strings are only references given to clarify the idea of ​​the present invention, and the scope of the present invention cannot be limited based on all or part of them. Thought. In addition, for well-known methods, procedures, structures, and circuit structures (hereinafter referred to as "known matters"), the description in the details is omitted, and at the same time, it is also for the sake of brevity of description, and these known matters are not intentionally excluded. all or part of. Since the relevant public knowledge can be known by those skilled in the art before the filing date of the present invention, it is of course included in the following description.

[0015] figure 1 A conceptual block d...

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Abstract

The OFDM receiver includes: transform means (28A, 28B) having at least two systems (systems A, B) and transforming the received OFDM signal from antennas 24A, 24B for receiving the OFDM signal to a carrier domain signal per symbol unit; and a composite means (29) that segments the carrier units and adaptively composites the signal data which constitute a plurality of different carriers (frequencies) transformed by a first system (system A) transform means (28A) and the signal data which constitute a plurality of different carriers (frequencies) transformed by a second system (system B) transform means (28B) for each identical carrier (frequency) in each system.

Description

technical field [0001] The present invention relates to an OFDM receiving device, an OFDM receiving circuit and an OFDM receiving method, in particular to an OFDM receiving device, an OFDM receiving circuit and an OFDM receiving method using diversity that can reduce error rates and improve receiving quality. Background technique [0002] OFDM (Orthogonal Frequency Division Multiplexing: Orthogonal Frequency Division Multiplexing) is a method of setting as many carriers as possible within the transmission bandwidth on the principle of not interfering with each other, and assigning data to the amplitude and phase of each carrier. Transmission technology for digital modulation such as PSK (Phase Shift Keying) or QAM (Quadrature Amplitude Modulation). For example, in Japan's terrestrial digital broadcasting standard (ISDB-T: Integrated Services Digital Broadcasting-Terrestrial), in each broadcast station, the bandwidth of about 6MHz is divided into 13 segments, and multiple car...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J11/00H04B7/08H04B7/12H04L1/06H04L25/02H04L27/26
CPCH04L27/2647H04L25/0232H04L1/06
Inventor 冈田国雄
Owner CASIO COMPUTER CO LTD