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A signal transmission method and device for synchronization

A signal transmission device and synchronization signal technology, applied in the field of communication, can solve the problems of D2D system signal detection errors and reduced communication performance of the communication system, etc.

Active Publication Date: 2019-04-12
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] It can be seen that in the prior art, PD2DSS and PSS are the same, which may cause signal detection errors in the D2D system, thereby reducing the communication performance of the communication system

Method used

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  • A signal transmission method and device for synchronization
  • A signal transmission method and device for synchronization
  • A signal transmission method and device for synchronization

Examples

Experimental program
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Embodiment 2

[0148] In the method described in Embodiment 2 of the present invention, the length of the generated sequence for the synchronization signal is an odd number, and the method can be directly applied to a time domain scenario or a frequency domain scenario using multi-carrier modulation.

[0149] Specifically, in Embodiment 2, the generating sequence d(n) by using sequence b(n) is specifically:

[0150]

[0151] Wherein, b(n), n=0, 1,..., L-1; L is an odd number.

[0152] It can be seen that b(n) is an odd sequence of length L, and the sequence b(n) is used to generate an even sequence d(n) of length (L+1). The length of the sequence d(n) is greater than the length of the sequence b(n).

[0153] However, in the prior art, the PSS generates an even sequence with a length of L−1 from an odd sequence with a length of L. It can be seen that the synchronization signal finally obtained in the embodiment of the present invention is different from the PSS.

[0154] Further, the seq...

Embodiment 3

[0228] In the method described in Embodiment 3 of the present invention, the length of the generated sequence for the synchronization signal is an even number, and the method can be directly applied to a time domain scenario or a frequency domain SC-FDMA (Single-carrier Frequency-Division Multiple Access, single carrier frequency division multiple access) modulation scenario.

[0229] Specifically, in the third embodiment, the generating sequence d(n) by using the sequence b(n) is specifically:

[0230] d(n)=b(n),n=0,1,...,L-1 (18)

[0231] Wherein, L is an even number.

[0232] In the third embodiment of the present invention, the lengths of the sequence b(n) and the sequence d(n) are both L.

[0233] Further, the sequence b(n) may be a perfect sequence. The perfect sequence is the same as that described in Example 2. Specifically, the perfect sequence b(n) may specifically be: a ZC sequence or a GCL sequence.

[0234] Specifically, when the ZC sequence is used as the se...

Embodiment 4

[0293] In Embodiment 4 of the present invention, the method for generating sequence d(n) is the same as Embodiment 2 of the present invention, using odd sequence b(n) of length L to generate even sequence d(n) of length (L+1). Only a brief introduction is given below, and the specific generation process is the same as that described in Embodiment 2, and will not be repeated here.

[0294] Specifically, in Embodiment 4, the generating sequence d(n) by using sequence b(n) is specifically:

[0295]

[0296] Wherein, b(n), n=0, 1,..., L-1; L is an odd number.

[0297] It can be seen that b(n) is a sequence of length L, and the sequence b(n) is used to generate d(n) of length (L+1). The length of the sequence d(n) is greater than the length of the sequence b(n).

[0298] Thus, the synchronization signal finally obtained in the embodiment of the present invention is different from the PSS.

[0299] In the method described in Embodiment 4 of the present invention, the perfect s...

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Abstract

A signal transmission method for synchronization, comprising: using sequence b(n) to generate a sequence d(n) for a synchronization signal; mapping the sequence d(n) to a corresponding resource position to generate a synchronized baseband signal s: The baseband signal s is sent out after performing radio frequency processing; wherein, the length of the sequence d(n) used for the synchronization signal is not less than the length of the sequence b(n). The embodiment of the invention also discloses a signal sending device for synchronization. By adopting the embodiments of the present invention, the communication performance of the D2D communication system can be effectively improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a signal sending method and device for synchronization. Background technique [0002] Synchronization is a key technology in communication systems, especially wireless communication systems. Whether the receiver can efficiently synchronize to the transmitter will greatly affect the performance of the actual communication system. [0003] Currently, 3GPP (The 3rd Generation Partnership Project) is implementing a communication system called D2D (Device to Device), that is, multiple UEs (User Equipment, user equipment) can directly communicate with each other. Inter-communication, and the communication data does not need to be transferred through the base station. [0004] refer to figure 1 , is a schematic diagram of a scene of a typical D2D system. like figure 1 As shown, an LTE (Long Term Evolution, long term evolution) base station sends a primary synchroniza...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH04L27/2613H04L27/2692
Inventor 黎超
Owner HUAWEI TECH CO LTD
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