Downlink transmitter system and operating method thereof

A transmitter and transmit diversity technology, applied in transmission systems, digital transmission systems, space transmit diversity, etc., can solve the problems of wasting idle resources, high resource overhead, parallel processing of two codeword control layers, etc., to achieve logic control Simple, low resource overhead, fast, effective and accurate realization of the effect of the method

Active Publication Date: 2017-05-17
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

This traditional parallel structure has a large resource overhead, and the parallel processing of two codewords is very complicated at the control layer, and there are many wasted idle resources when completing single-antenna transmission of one codeword, especially in the project development applied by the present invention. Among them, its huge resource overhead brings certain challenges to FPGA (Field Programmable Gate Array) verification and VLSI (Very Large Scale Integration) implementation

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  • Downlink transmitter system and operating method thereof
  • Downlink transmitter system and operating method thereof
  • Downlink transmitter system and operating method thereof

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Embodiment Construction

[0047] Aiming at the problems of the existing downlink transmitter system, the present invention proposes and specifically describes a downlink transmitter system and its working method, and improves and redesigns the key downlink modules involved. The control is simple, the versatility is good and the scalability is strong, and it is realized on the FPGA, which has reference significance for the development of the baseband chip.

[0048] An embodiment of the present invention provides a downlink transmitter system for supporting the transmission of two codewords in a dual-antenna channel, including a processing module, a layer mapping module, a precoding module and a resource long-range module.

[0049] The processing module is used to perform time-sharing serial processing in the direction of one code word to the input two code words to obtain the code word serial data stream;

[0050] Furthermore, the processing module may include a frequency-doubled clock module, thereby d...

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Abstract

The invention provides a downlink transmitter system and an operating method thereof. The downlink transmitter system is used for supporting transmission of two-channel code words in a double-antenna channel and comprises a processing module, a layer mapping module, a precoding module and a resource mapping module, wherein the processing module is used for subjecting the inputted two-channel code words to time-sharing serial processing in a one-channel code word direction so as to obtain a code word serial data flow; the layer mapping module is used for subjecting the code word serial data flow to layering processing and outputting two layers of data flows; the precoding module is used for preprocessing the two layers of data flows and distributing the two layers of preprocessed data flows to different antenna ports; the resource mapping module is used for storing, reading and adding the two layers of data flows. The downlink transmitter system has the advantages of low hardware cost, simplicity in control, high universality and extensibility, capability of supporting downlink channel transmission and multiple double-antenna transmission modes stipulated by protocols and compatibility with single-antenna transmission modes.

Description

technical field [0001] The invention relates to the field of broadband mobile communication, in particular to a downlink transmitter system and a working method. Background technique [0002] The LTE (Long Term Evolution) system includes two duplex modes, FDD (Frequency Division Duplex) and TDD (Time Division Duplex). Frequency-division duplex transceiver systems work at different frequencies, while time-division duplex transceiver systems work at different times. Among them, TD-LTE (Time Division Duplex Long Term Evolution) is one of the most popular research and application directions in the field of mobile communication, and the TD-LTE physical layer downlink transmitter system is the communication direction from eNodeB (base station) to UE (terminal). The baseband signal processing process is an important part of the TD-LTE baseband system. [0003] At present, the TD-LTE downlink baseband transmitter system is complex and costly, so it is necessary to optimize its str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0456H04B7/06H04B7/08H04L5/00
CPCH04B7/0456H04B7/068H04B7/08H04L5/0005
Inventor 孙璐王洲吴斌申山山夏凯锋刘振
Owner INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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