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Modulating and coding apparatus and method in a high-rate wireless data communication system

A technology of encoder and modulation order, which is applied in the direction of adjusting channel coding, digital transmission system, separation device of transmission path, etc., and can solve problems such as inability to analyze the relationship in detail

Inactive Publication Date: 2007-01-31
SAMSUNG ELECTRONICS CO LTD
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Problems solved by technology

In OFDM / OFDMA systems, the relationship between the modulation scheme and the error correction code rate for each data rate cannot be analyzed in detail

Method used

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  • Modulating and coding apparatus and method in a high-rate wireless data communication system
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  • Modulating and coding apparatus and method in a high-rate wireless data communication system

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Embodiment Construction

[0049] Now, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, detailed descriptions of known functions and configurations incorporated herein are omitted for conciseness.

[0050] Before giving a description of the invention, data rates and subchannels will be described in the details. Each data rate table is configured such that, depending on the number of subchannels, approximately 120 different possible combinations of modulation schemes and error correction code rates are provided. Therefore, an embodiment of the present invention provides a method for analyzing the relationship between a modulation scheme and an error correction code rate for each data rate in an Orthogonal Frequency Division Multiplexing / Orthogonal Frequency Division Multiple Access (OFDM / OFDMA) system. method of relationship. Furthermore, embodiments of the present invention provide a standard and method for dete...

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Abstract

An apparatus and method for determining a modulation order of packet data to be transmitted through a subcarrier in a transmission apparatus. In the apparatus and method, transmitter physical channels encode and modulate data to transmit the user data with OFDM symbols. A controller outputs packet data to the transmitter physical channels, and determines the number of transmission slots, the number of OFDM symbols, the number of subchannels, and a size of an encoder packet. A modulation order and code rate decider receives, from the controller, the number of transmission slots, the number of OFDM symbols, the number of subchannels, and a size of an encoder packet, calculates a Modulation order Product code Rate (MPR), determines a modulation order according to the MPR, and outputs the determined modulation order to a corresponding physical channel.

Description

technical field [0001] The present invention generally relates to a modulation and coding apparatus and method in a wireless data communication system. Specifically, the present invention relates to a modulation and encoding device and method in a high-rate wireless data communication system. Background technique [0002] Generally, wireless data communication systems are classified into Mobile Communication System (MCS), Wireless Local Area Network (WLAN), Wide Area Network (WAN), and Metropolitan Area Network (MAN), all of which are based on mobile communication technology. For mobile communication systems, the Standardization Group of the 3rd Generation Partnership Project-2 (3GPP2), the synchronous Code Division Multiple Access (CDMA) mobile communication system, and the 3rd Generation Partnership Project (3GPP), the Asynchronous Universal Mobile The standardization group for the telecommunications system (UMTS) mobile communication system independently develops high-sp...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L1/00H04L1/08
CPCH04L5/0007H04L1/0065H04L1/0003H04L1/0071H04L5/006H04L5/0046H04L1/0009H04L1/0068H04L1/08H04L5/0037A47F10/06A47G23/08A47J37/045A47J37/0781F24C1/08
Inventor 金潣龟河相赫具永谟
Owner SAMSUNG ELECTRONICS CO LTD
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