Ascending pilot frequency multiplexing method, system and terminal based on single carrier frequency division multiple address

A single-carrier frequency division and pilot multiplexing technology, applied in frequency division multiplexing systems, baseband systems, multiplexing communications, etc.

Inactive Publication Date: 2010-09-15
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0049] Among them, in the single-carrier comb spectrum system, when the interval between subcarriers occupied by a user's pilot symbol is relatively large, such as greater than the coherent bandwidth, it will make The effect of the above-mentioned frequency domain interpolation processing is not ideal, resulting in low accuracy of channel estimation

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  • Ascending pilot frequency multiplexing method, system and terminal based on single carrier frequency division multiple address
  • Ascending pilot frequency multiplexing method, system and terminal based on single carrier frequency division multiple address
  • Ascending pilot frequency multiplexing method, system and terminal based on single carrier frequency division multiple address

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Embodiment Construction

[0093] The design purpose of the present invention is to provide a scheme in which multiple users can frequency-division multiplex pilot symbols, so that the interval between each pilot subcarrier on the pilot symbol frequency domain becomes smaller to obtain a better channel Estimation of interpolation processing effects.

[0094] The main realization principle and specific implementation manners of the present invention will be described in detail below with reference to each accompanying drawing.

[0095] Please refer to Figure 5 , this figure is the main implementation principle flowchart of the first pilot multiplexing method based on single carrier frequency division multiple access technology proposed by the present invention, mainly used in a channel estimation cycle (such as a TTI or several TTIs) ), perform pilot multiplexing processing between at least two pilot symbols time-division multiplexed with the symbols of the data signal sent by the user, and its main im...

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Abstract

A method for multiplexing uplink pilot based on single carrier frequency division multiple access, comprises the steps: the user terminal transmits the pilot signal on several sub-carriers within a symbol; and in the other symbol, transmits the pilot signal on several sub-carriers which interleaves with the sub-carrier occupied in the previous symbol; time division multiplexes the said respectivesignal with the symbol in which the user terminal transmit the data signal. Wherein the user terminal could transmit the pilot signal on several sub-carriers within the said symbol under the direction of the network side. The invention also provides a user terminal and a method for multiplexing uplink pilot based on single carrier frequency division multiple access accordingly. The invention could decrease the interval between the sub-carriers occupied by pilot signal on the frequency field, and thus achieve better interpolation processing effect.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to an uplink pilot multiplexing method and system based on single carrier frequency division multiple access, and a user terminal. Background technique [0002] In recent years, multi-carrier technology has become a hot technology in broadband wireless communication. The basic idea is to divide a broadband carrier into multiple sub-carriers, and transmit data in parallel on the divided sub-carriers. Usually the width of the subcarrier is smaller than the coherent bandwidth of the channel, so that on the frequency selective channel, the fading of each subcarrier is flat fading, which can reduce the crosstalk between data symbols, and does not require complex channel equalization, suitable for high speed data transmission. Multi-carrier technology usually adopts frequency domain channel estimation technology and frequency domain equalization technology. Some s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J1/00
CPCH04L5/0007H04L25/0232H04L25/0226H04L5/0048
Inventor 马莎何玉娟
Owner HUAWEI TECH CO LTD
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