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Pilot design method, recording medium, and transmission apparatus

A technology of pilot frequency design and recording medium, applied in the fields of pilot frequency design, recording medium and transmission equipment, can solve the problems of transmission efficiency channel estimation performance change, etc., and achieve the effects of accurate estimation, improved adaptability, and accurate channel value

Active Publication Date: 2010-11-03
ELECTRONICS & TELECOMM RES INST +1
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  • Description
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Problems solved by technology

[0005] However, since the method of determining which channel corresponds to the corresponding pilot varies according to the method of designing pilots on blocks, the transmission efficiency and channel estimation performance also vary

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  • Pilot design method, recording medium, and transmission apparatus
  • Pilot design method, recording medium, and transmission apparatus
  • Pilot design method, recording medium, and transmission apparatus

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Embodiment Construction

[0031] In the following detailed description, only certain exemplary embodiments of the present invention are shown and described, simply by way of illustration. As such, those skilled in the art would realize that the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and descriptions are to be regarded as illustrative and not restrictive. Like reference numerals refer to like elements throughout the specification.

[0032] It should also be understood that when used in this specification, the terms "comprising" and / or "comprising" indicate the presence of the stated features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof. In addition, the terms 'means' and 'module' described in the specification mean ...

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Abstract

In an orthogonal frequency division multiple access (OFDMA) communication system, a transmission apparatus connects a plurality of tiles, which have a 4x3 structure, along a time axis or a frequency axis in an uplink 4-layer PUSC mode, and designs pilots corresponding to one layer at one of a plurality of symbol positions adjacent to a first corner of the plurality of tiles and one of a pluralityof symbol positions adjacent to a second corner of the plurality of tiles that face the first corner in a diagonal direction. In this case, null symbols are designed at the rest of the symbol positions adjacent to the first corner or the second corner where the pilots are not designed. Accordingly, a receiving apparatus can obtain n channel values from n tiles. Further, n estimated channel valuesare applied to a linear interpolation method, so that it is possible to estimate the entire channel value of n tiles.

Description

technical field [0001] The invention relates to a pilot design method, a recording medium and a sending device. More particularly, the present invention relates to a pilot design method, recording medium and transmission device for designing pilots in an uplink 4-layer PUSC mode in an Orthogonal Frequency Division Multiple Access (OFDMA) system. Background technique [0002] The Orthogonal Frequency Division Multiplexing (hereinafter referred to as "OFDM") method is a communication method that divides high-speed serial data into low-speed parallel signals, modulates the parallel signals into orthogonal subcarriers, and transmits the subcarriers. [0003] Also, an Orthogonal Frequency Division Multiple Access (referred to as "OFDMA" or "OFDM-FDMA") method is one of the multiple access methods. The OFDMA method allocates a portion of resources for each of the multiple layers in a two-dimensional graph in which limited uplink / downlink radio resources are time-axis and the fre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26
CPCH04L25/0232H04L5/0007H04L25/0226H04L5/0023H04L5/0048H04L27/26134
Inventor 金志炯宋永锡权东昇
Owner ELECTRONICS & TELECOMM RES INST
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