Receiving device in radio communication system of using at least three transmitter attennas

A technology for wireless communication systems and transmitters, applied in diversity/multi-antenna systems, multiplexing communication, code division multiplexing systems, etc. question

Inactive Publication Date: 2004-08-04
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] As mentioned above, when a composite symbol is transmitted through three or more antennas using conventional space-time block coding, 2N time intervals are required to transmit N symbols, resulting in a loss of data rate
Therefore, the transmit latency is extended and the data rate is reduced

Method used

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  • Receiving device in radio communication system of using at least three transmitter attennas
  • Receiving device in radio communication system of using at least three transmitter attennas
  • Receiving device in radio communication system of using at least three transmitter attennas

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Embodiment Construction

[0024] Hereinafter, a preferred embodiment of the present invention will be described in detail 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.

[0025] For an input of four symbols, the symbols transmitted by the three antennas in four time intervals are expressed as shown in matrix (2):

[0026] C 43 = s 1 s 2 s 3 s 4 s 5 s...

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Abstract

A receiver for receiving complex symbols in a radio communication system, in which a symbol arranger collects signals from at least three transmitter antennas through at least one receiver antenna over four time intervals; a channel estimator estimates at least three channel gains from the three transmitter antennas to the receiver antenna; first and second decoders each compute metrics for all possible pairs of symbols using the received signals and channel gains, and detect two symbols having a minimum metric; And a P / S (Parallel to Serial) converter arranges the detected symbols in the right order. Each decoder linearly operates the received signals and channel gains, pre-detects two symbols using threshold detection, and outputs the pre-detected symbols as final symbols if the product of the product of the pre-detected symbols and a constant determined by the channel gains is a minimum.

Description

technical field [0001] The present invention relates generally to a wireless communication system, and more particularly to an arrangement for overcoming degradation caused by fading using transmitter antenna diversity. Background technique [0002] Effective techniques for mitigating multipath fading in wireless communication systems are time and frequency diversity. A space-time block code has been proposed by VahidTarokh et al. Space Time Block Coding is a well known antenna diversity scheme disclosed in: "Space Time Block Coding from Orthogonal Design", IEEE Trans. On Info., Theory, Vol. 45, pp. 1455-1467 pp., July 1999. Tarokh's space-time block codes are an extension of the transmitter antenna diversity introduced by S.M. Alamouti, which allows the use of two or more antennas. Tarokh's space-time block code is disclosed in "Space Time Block Coding from Orthogonal Design (space-time block coding from orthogonal design)", IEEE Trans.On Info., Theory, Volume 45, pages ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/41H04B7/02H04B7/06H04B7/08H04B7/12H04J99/00H04L1/00H04L1/06
CPCH04L1/0054H04L1/0618H04B7/08
Inventor 黄讚洙金映秀南承勋郑在学
Owner SAMSUNG ELECTRONICS CO LTD
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