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Transmitting device, receiving device, encoder, and encoding method

A technology of transmitting device and encoder, which is applied in the direction of encoding, encoding elements, cyclic codes, etc., can solve the problems of obtaining gains and achieve the effect of improving the error rate characteristics

Inactive Publication Date: 2010-01-20
PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the main BCH is transmitted in less bandwidth of 1.25MHz, it is difficult to obtain gain through frequency diversity

Method used

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  • Transmitting device, receiving device, encoder, and encoding method
  • Transmitting device, receiving device, encoder, and encoding method
  • Transmitting device, receiving device, encoder, and encoding method

Examples

Experimental program
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Effect test

Embodiment approach 1

[0075] In this embodiment, a base station and a mobile terminal that improve the reception quality of a non-primary BCH in Evolved UTRA will be described.

[0076] image 3 The configuration of the transmission device according to Embodiment 1 of the present invention is shown. The transmitting device 100 is installed in a base station. The transmitting device 100 transmits the information sequence Sp through the primary BCH, transmits the information sequence Sn through the non-primary BCH, and transmits the information sequence Sd through a shared data channel (SDCH: Shared Data CHannel). The information sequence Sp of the primary BCH includes inherent information of the base station, such as information such as bandwidth to be used. The information sequence Sn of the non-primary BCH includes information specific to a sector or a mobile terminal. The information sequence Sd of the SDCH includes transmission data addressed to a plurality of mobile terminals.

[0077] The ...

Embodiment approach 2

[0130] This embodiment is an embodiment in which the present invention is applied to a layered transmission method used in digital terrestrial broadcasting or the like. Hereinafter, this embodiment will be described by taking the layered transmission scheme used in terrestrial digital audio broadcasting as an example.

[0131] Figure 9 It is a schematic diagram of the layered transmission method in terrestrial digital audio broadcasting. exist Figure 9 In the example, the data layer is two layers, and three frequency bands (segment) are sent at the same time. In the three-band format, hierarchical transmission in which two layers with different transmission characteristics are simultaneously transmitted can be performed between one OFDM band in the central portion and the other two OFDM bands. In each layer, parameters such as carrier modulation scheme, inner code coding rate, and time interleaving length can be specified for each layer. Also, by performing frequency int...

Embodiment approach 3

[0151] This embodiment is an embodiment in which the principle of concatenating and encoding a plurality of information sequences according to the present invention is applied to hybrid ARQ (Automatic Repeat reQuest, automatic repeat request). In this embodiment, when retransmitting an error-correcting coded block in which an error has occurred, a plurality of error-correcting coded blocks are combined to form an error-correcting codeword block to be retransmitted with a code length longer than the previous transmission time, and only Send its parity part.

[0152] Figure 13 The structure of the transmission device of this embodiment is shown.

[0153] The transmission device 400 inputs the transmission data signal to the transmission data signal memory 401 and the transmission data signal selection unit 402 . The transmission data signal memory 401 stores the input transmission data signal.

[0154] When transmitting for the first time, the transmission data signal select...

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Abstract

In such a relationship between information transmitted by a primary BCH, for example, and information transmitted by a non-primary BCH as a case of the transmission for a first information sequence that is easy to keep receiving quality and a second information sequence that is difficult to keep receiving quality, a transmitting device and a receiving device are disclosed for making it possible to improve an error rate of the second information sequence. In the devices, an encoder (102) encodes a non-primary BCH information sequence (Sn) with a long code length including a primary BCH information sequence (Sp). On the receiving side, a non-primary BCH information sequence is decoded with a long code length by using the received primary BCH value. With this, a higher encoding gain than encoding only with the non-primary BCH information can be obtained, so that a receiving characteristic of the non-primary BCH can be improved.

Description

technical field [0001] The present invention relates to a transmitting device, a receiving device, an encoder, and an encoding method that perform forward error correction (FEC: Forward Error Correction) processing. Background technique [0002] Currently, in 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project), Evolved UTRA (UMTS Terrestrial Radio Access, UMTS Terrestrial Radio Access) and UTRAN (UMTS Terrestrial Radio Access Network, UMTS Terrestrial Radio Access) are being carried out. network access) and IP (Internet Protocol, Internet Protocol)-based wireless access network standardization, as a development version of the third-generation cellular mobile communication system. In Evolved UTRA, when using the 20MHz frequency band, the target maximum rate is specified as 100Mbps for the downlink and 50Mbps for the uplink. Therefore, the frequency efficiency in the maximum rate is 5 bps / Hz for the downlink and 2.5 Mbps / Hz for the uplink, respective...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H03M13/15H03M13/19H04J11/00
CPCH03M13/6525H04L1/0041H04L1/1812H04L1/1867H04L1/0072H03M13/1102H04L1/0057
Inventor 冈村周太村上丰折桥雅之岸上高明
Owner PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
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