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System, modem, receiver, transmitter and method for improving transmission performance

一种调制解调器、发送机的技术，应用在发射机/接收机中的整形网络、传输系统、基带系统等方向

Active Publication Date: 2006-04-12
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, traditional TEQ coefficient calculation algorithms require more processing, which requires expensive hardware to complete

Method used

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  • System, modem, receiver, transmitter and method for improving transmission performance
  • System, modem, receiver, transmitter and method for improving transmission performance
  • System, modem, receiver, transmitter and method for improving transmission performance

Examples

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Embodiment Construction

[0041] Hereinafter, exemplary embodiments of the present invention are described in detail with reference to the accompanying drawings.

[0042] In the figures, the same reference numerals are used to denote the same elements throughout the drawings.

[0043] In the following example embodiments, it is assumed that a wireless Orthogonal Frequency Division Multiplexing (OFDM) based modem includes associated receive and transmit channels. In addition, it is assumed that the associated receive and transmit channels may vary during the two-packet receive and transmit time intervals.

[0044] Under these assumptions, according to an example embodiment of the present invention, the received data can be used to estimate the received channel, time domain equalization (TEQ) coefficients are calculated and applied to the transmitted data.

[0045] Figure 4 is a block diagram illustrating a wireless OFDM based modem 400 according to an example embodiment of the present invention.

[...

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PUM

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Abstract

A system, modem, receiver, transmitter and method for improving transmission performance. A coefficient may be calculated using a received signal. A process may be performed on at least one data packet scheduled for transmission based on the calculated coefficient. The process may improve transmission performance.

Description

[0001] Cross-References to Related Requests [0002] This application claims priority from Korean Patent Application No. 10-2004-0060905 filed in the Korean Intellectual Property Office on Aug. 2, 2004, the entire disclosure of which is hereby incorporated by reference. technical field [0003] Exemplary embodiments of the present invention relate generally to systems, modems, receivers, transmitters and methods for improving transmission performance, and in particular to systems, modems, receivers, sender and method. Background technique [0004] In a Coded Orthogonal Frequency Division Multiplexing (COFDM) system, a data portion is encoded by Frequency Division Multiplexing (FDM) based on a modulation / demodulation method. Multiple (eg, hundreds) of carriers may be allocated to transmit the encoded data portion. Instead of sending the encoded data portions sequentially (eg, not simultaneously) in a COFDM system, the encoded data portions are transmitted simultaneously. S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L29/06H04B3/04H04B7/005H04J11/00
CPCH04L27/2647H04L2025/03808H04L27/2626H04L25/03019H04L25/03343H04L25/0212H04L2025/03414H04L2025/0342H04L27/26H04L27/01H04L25/03
Inventor 白勋
Owner SAMSUNG ELECTRONICS CO LTD
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