Method, device and system for generating PRACH baseband signal

A technology for baseband signals and basic signals, which is applied in baseband system components, multi-frequency code systems, wireless communications, etc., can solve the problem of not providing a PRACH baseband signal generation scheme, without detailed description to generate PRACH baseband signals, and complex PRACH baseband signal generation. and other problems, to achieve the effect of reducing the amount of data storage, reducing the amount of calculation, reducing the difficulty and cost

Active Publication Date: 2011-01-26
LEADCORE TECH
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  • Summary
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Problems solved by technology

[0006] In the process of realizing the present invention, the inventor found through research that: the generation of the PRACH baseband signal in the LTE system is relatively complicated, and the generation scheme of the PRACH baseband signal is not provided in the prior art, especially how to generate the PRACH in the digital baseband is not described in detail Baseband signal scheme

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  • Method, device and system for generating PRACH baseband signal
  • Method, device and system for generating PRACH baseband signal
  • Method, device and system for generating PRACH baseband signal

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Embodiment Construction

[0039] Embodiments of the present invention provide a method, device and system for generating a PRACH baseband signal, which can conveniently generate a PRACH digital baseband signal. Furthermore, in combination with LTE frequency grid settings, embodiments of the present invention also provide an improved solution for generating PRACH baseband signals, which can effectively reduce the complexity and storage capacity of PRACH digital baseband processing. In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0040] Such as figure 1 As shown in FIG. 1 , it is a flow chart of a method for generating a PRACH baseband signal provided by Embodiment 1 of the present invention. The methods include:

[0041] Step 101, generating a ZC root sequence in the time domain;

[0042] Among them, the ZC root sequence is genera...

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Abstract

The invention discloses a method, a device and a system for generating a physical random access channel (PRACH) baseband signal. The method comprises the following steps of: generating a PRACH digital baseband basic signal; sampling the basic signal and performing low-pass filtering to obtain a signal in a set spectrum range; integrally shifting the spectrum of the digital baseband signal to obtain the digital baseband signal in the same sampling period; inserting a content provider (CP) to obtain the digital baseband signal expressed by a Preamble sequence; and finally performing up-conversion to increase the frequency to the working central frequency point of a current cell for transmission. By the method, the digital baseband signal of the PRACH can be very conveniently and intuitively generated. Furthermore, the invention also discloses an improvement scheme which can effectively reduce the complexity of PRACH digital baseband processing and memory space.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, device and system for generating a PRACH baseband signal. Background technique [0002] Through the realization of enhanced technologies such as HSPA+ (the downward evolution version of HSPA, High Speed ​​Package Access), the third generation cooperation project (3GPP, 3 rd GenerationPartnership Project) wireless access technology will remain competitive in the next few years. In order to keep leading in the next ten years or even longer, 3GPP wireless access technology needs a long-term evolution process to ensure its competitiveness. In this context, 3GPP established the Long-Term Evolution project (LTE, LongTime Evolution) plan, the purpose of which is to introduce a new wireless air interface and various advanced technologies in order to achieve greater transmission rates and smaller access delays. and larger system capacity. [0003] The LTE phys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/03H04L27/26H04W74/08
Inventor 王乃博郭华永张善忠张铭虎
Owner LEADCORE TECH
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