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Apparatus and method for space-time-frequency block coding for increasing performance

A technology of block coding and frequency, applied in the field of performance devices

Active Publication Date: 2007-07-25
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

Note here that this orthogonal space-time code results in a rate

Method used

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  • Apparatus and method for space-time-frequency block coding for increasing performance
  • Apparatus and method for space-time-frequency block coding for increasing performance
  • Apparatus and method for space-time-frequency block coding for increasing performance

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Embodiment Construction

[0089] Preferred embodiments of the present invention are described here below with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

[0090] The present invention intends to provide a space-time-frequency block coding scheme for improving performance in systems using FDFR orthogonal STFBC.

[0091] FIG. 6 is a block diagram of a transmitter in a mobile communication system using the STFBC scheme according to the present invention. Assume that the transmitter uses three transmit (Tx) antennas.

[0092] Referring to Fig. 6, the precoder 600 will input the information symbol s 1 , s 2 , s 3 , s 4 each multiplied by e jθ , about to s 1 , s 2 , s 3 , s 4 Rotating θ in the complex plane, yields is expressed as x i +jy i new symbol c 1 、c 2 、c 3 、c 4 . The STFBC mapper 602 maps the symbol c 1 、c 2 、c 3 、c 4 grouping...

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Abstract

The present invention provides a space-time-frequency block coding apparatus and method in a transmitter with three transmit(Tx) antennas. An input symbol sequence is transmitted through three Tx antennas according to a permutation method using a selected transmission matrix in order to improve the performance of an STFBC.

Description

technical field [0001] The present invention relates generally to a space-time-frequency block coding apparatus in a transmitter with three transmit (Tx) antennas, and in particular to using feedback information received from a receiver to pass three A device that transmits a sequence of input symbols through an antenna in order to improve the performance of space-time frequency block coding (STFBC). Background technique [0002] A fundamental problem in communication is how to efficiently and reliably send data over a channel. Since the future generation of multimedia mobile communication requires a high-speed communication system capable of transmitting various information including video and wireless data in addition to voice-focused services, it is important to improve system efficiency. [0003] In a wireless channel environment of a mobile communication system, as opposed to a wired channel environment, transmitted signals inevitably experience loss due to several fa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06
CPCH04L1/0625H04L1/0643H04L1/0668H04L1/0681
Inventor 蔡赞秉尹圣烈郑鸿实卢元一朴东植金宰烈吴廷泰高均秉
Owner SAMSUNG ELECTRONICS CO LTD
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