Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for improving combined detection performance, baseband signal processor and base station

A joint detection and baseband signal technology, applied in wireless communication, transmission monitoring, electrical components, etc.

Active Publication Date: 2011-05-18
DATANG MOBILE COMM EQUIP CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the SYNC_UL sequence only causes serious interference to a small part of the service time slot. From the perspective of the entire time slot, this interference is non-time stable. If the existing simplified joint detection method is used, the detection will inevitably be inaccurate. Great loss to system performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for improving combined detection performance, baseband signal processor and base station
  • Method for improving combined detection performance, baseband signal processor and base station
  • Method for improving combined detection performance, baseband signal processor and base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] In a communication system, due to different interference power strengths or different directions of interference waves, the interference received by different places of the data is often different.

[0077] Let the received data be r(ka, i), ka=1, 2,..., Ka, i=0, 1,..., N-1, where ka is the antenna number, and Ka is the total antenna N is the total length of the data. The interference and noise contained in the received data can be regarded as the sum of multiple interference and noise components. Let n 1 (ka, i), ka=1, 2, ..., Ka, i = 0, 1, ..., N-1, which can be seen as figure 1 Persistent interference in , which corresponds to Gaussian noise and neighbor interference in the actual system; the remaining interference component n 2 (ka, i), ka=1, 2, ..., Ka, i = 0, 1, ..., N-1, does not have the time stationary characteristic in the whole time slot, can correspond to figure 1 burst interference in . However, in an actual system, even the interference that is not ti...

Embodiment 2

[0114] In fact, the improved joint detection method provided by Embodiment 1 is suitable for all systems using joint detection. However, in order to make the present invention easier to understand, Embodiment 2 specifically introduces that in the TD-SCDMA system, when UpPTS and service data are overlapped and sent, The scheme of improving data detection performance is realized by using the invention.

[0115] In the TD-SCDMA system, UE sends UpPTS for random access and establishment of uplink synchronization. The length of UpPTS is only 128 chips, and only the data part of a time slot has 704 chips. Therefore, when the UpPTS and the business time slots are overlapped and sent, the strength and direction of interference to the data are not exactly the same at the location where the UpPTS is sent and the location where the non-UpPTS is sent. In this way, the interference can be suppressed through the above segmented joint detection method.

[0116] see Figure 5 , now assume ...

Embodiment 3

[0147] Embodiment 3 On the basis of Embodiment 1 or Embodiment 2, the accuracy of interference estimation is increased in an iterative manner.

[0148] Taking Embodiment 2 as an example, the specific iteration method is to use the result of step 304 as the input of the interference estimation in step 301 to recalculate the interference value, and iterate for several times until the preset termination condition is satisfied.

[0149] For example, n m (ka, i), ka=1, 2,..., Ka, i=0, 1,..., N-1 represents the interference received by multiple antennas after the mth iteration, Ka represents the number of antenna elements, N represents the time slot signal length, and the initial condition n 0 (ka,i)=0. Then iterate m times until:

[0150] Σ i = 0 N - 1 | | n ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method of improving joint detection performance, including the following steps: carrying out interference estimation to the date to be detected; segmenting the data according to the interference condition of each part; detecting the segmented data respectively; and merging the detection result of each section of data. The invention carries out segmenting detection to thedata to be detected, which has stronger ability to restrain interference, especially fits for detecting the data affected by emergent interference. Meanwhile, the invention also discloses a base bandsignal processor and a base station device.

Description

technical field [0001] The present invention relates to the technical field of joint detection (JD), in particular to a method for improving joint detection performance, a baseband signal processor and base station equipment. Background technique [0002] In actual communication systems such as WCDMA and TD-SCDMA, there is a certain correlation between signals of various user equipment (User Equipment, UE), which is the main reason for the existence of multiple access interference (Multiple Access Interference, MAI). Although the MAI generated by individual UEs is very small, as the number of UEs increases or the signal power increases, MAI becomes a major interference in the communication system. Multi-user joint detection technology can effectively resist MAI in the cell. However, since the base station (NodeB) cannot provide the characteristic sequence of the UE in the adjacent cell for the joint detection, the MAI of the adjacent cell cannot be eliminated by using the jo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/00H04B17/00H04B1/7105
Inventor 吴柯维徐红艳郑银香任世岩
Owner DATANG MOBILE COMM EQUIP CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com