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Sequence generation and mapping method of reference signals and transmission device

A technology of reference signal and mapping method, which is applied in the direction of signaling distribution, transmission path sub-channel distribution, electrical components, etc., and can solve the problems of reference signal sequence generation and mapping method not described

Inactive Publication Date: 2010-03-03
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] At present, the time-frequency position of the reference signal of the two layers in a subframe has been determined, as shown in Figure 4, however, the sequence generation and mapping method of the reference signal has not been described

Method used

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  • Sequence generation and mapping method of reference signals and transmission device
  • Sequence generation and mapping method of reference signals and transmission device
  • Sequence generation and mapping method of reference signals and transmission device

Examples

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no. 1 example

[0222] In this embodiment, the number of layers is 2, and reference signal #0 and reference signal #1 are sent respectively.

[0223] Reference signal #0 is located on the first, sixth, and eleventh subcarriers of the penultimate symbol of the first slot in the subframe and on the first, sixth, and eleventh subcarriers of the penultimate symbol of the first slot in the subframe On subcarriers, and on the first, sixth, and eleventh subcarriers of the penultimate symbol of the second slot and on the first, sixth, and eleventh subcarriers of the penultimate symbol ; The corresponding orthogonal code is {1, 1, 1, 1}.

[0224] Reference signal #1, located on the first, sixth, and eleventh subcarriers of the penultimate symbol of the first slot in the subframe and on the first, sixth, and eleventh subcarriers of the penultimate symbol subcarriers, and the first, sixth, and eleventh subcarriers of the penultimate symbol of the second slot and the first, sixth, and eleventh subcarrie...

no. 2 example

[0291] In this embodiment, the number of layers is four, and reference signal #0, reference signal #1, reference signal #2, and reference signal #3 are sent respectively.

[0292] Reference signal #0, located on the first, sixth, and eleventh subcarriers of the penultimate symbol of the first slot in the subframe and the first, sixth, and eleventh subcarriers of the penultimate symbol subcarriers, and the first, sixth, and eleventh subcarriers of the penultimate symbol of the second slot and the first, sixth, and eleventh subcarriers of the penultimate symbol above; the corresponding orthogonal code is {1, 1, 1, 1}.

[0293] Reference signal #1, located on the first, sixth, and eleventh subcarriers of the penultimate symbol of the first slot in the subframe and on the first, sixth, and eleventh subcarriers of the penultimate symbol subcarriers, and the first, sixth, and eleventh subcarriers of the penultimate symbol of the second slot and the first, sixth, and eleventh subcar...

no. 3 example

[0362] In this embodiment, the number of layers is 8, corresponding to reference signal #0, reference signal #1, reference signal #2, reference signal #3, reference signal #4, reference signal #5, reference signal #6, reference signal # 7.

[0363] Reference signal #0, located on the first, sixth, and eleventh subcarriers of the penultimate symbol of the first slot in the subframe and the first, sixth, and eleventh subcarriers of the penultimate symbol subcarriers, and the first, sixth, and eleventh subcarriers of the penultimate symbol of the second slot and the first, sixth, and eleventh subcarriers of the penultimate symbol above; the corresponding orthogonal code is {1, 1, 1, 1}.

[0364] Reference signal #1, located on the first, sixth, and eleventh subcarriers of the penultimate symbol of the first slot in the subframe and on the first, sixth, and eleventh subcarriers of the penultimate symbol subcarriers, and the first, sixth, and eleventh subcarriers of the penultima...

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Abstract

The invention discloses a sequence generation and a mapping method of reference signals and a transmission device. The method comprises the following steps: generating the sequence of the reference signals according to the frequency domain bandwidth of the reference signals; mapping the generated sequence of the reference signals to physical time-frequency resources, wherein, identical sequences are mapped on each OFDM symbol transmitting the references in the time cell to transmit the reference signals. While ensuring interference randomization, the invention also ensures the property of transmission simultaneously, and can carry out compatibility on the current LTE system better, thus realizing high order MIMO transmission, supporting the use of corresponding techniques and improving theoverall performance of the system.

Description

technical field [0001] The present invention relates to an advanced long-term evolution (Further Advancements for E-UTRA, LTE-Advanced or LTE-A) wireless communication system, in particular to a method for generating and mapping a reference signal sequence for demodulation in the LTE-A system and a sending device. Background technique [0002] Multiple Input Multiple Output (MIMO) technology can increase system capacity, improve transmission performance, and can be well integrated with other physical layer technologies, so it has become the third generation (B3G) and fourth generation (4G) mobile Key technology of communication system. However, when the channel correlation is strong, the diversity gain and multiplexing gain brought by the multipath channel are greatly reduced, resulting in a significant drop in MIMO system performance. [0003] In recent years, a new MIMO precoding method has been proposed, which is an efficient MIMO multiplexing method, which channelizes M...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04B1/707
CPCH04L5/0053
Inventor 戴博郁光辉陈艺戬吴欣
Owner ZTE CORP
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