【摘要】：隨著無(wú)線通信技術(shù)的發(fā)展、人們對(duì)通信行業(yè)的強(qiáng)烈需求以及國(guó)內(nèi)三大運(yùn)營(yíng)商的激烈競(jìng)爭(zhēng),3GPP組織正式啟動(dòng)了LTE(長(zhǎng)期演進(jìn))項(xiàng)目。在TD-LTE系統(tǒng)中,解資源映射技術(shù)在終端正確接收信號(hào)、解碼以及整個(gè)系統(tǒng)的穩(wěn)定性和高性能上尤為關(guān)鍵。TD-LTE系統(tǒng)擁有靈活的幀結(jié)構(gòu)配置、可變的系統(tǒng)帶寬、二維結(jié)構(gòu)的時(shí)頻域資源塊,同時(shí)采用以O(shè)FDM技術(shù)為基礎(chǔ)的多址方式。但這同時(shí)也提高了終端從幀結(jié)構(gòu)上分離各個(gè)物理信道和信號(hào)以及還原各自數(shù)據(jù)的難度,因此需要對(duì)TD-LTE下行解資源映射進(jìn)行研究,設(shè)計(jì)與實(shí)現(xiàn)一種穩(wěn)定和高性能的解資源映射方案:首先,對(duì)LTE的R10協(xié)議物理層中下行的五個(gè)物理信道和信號(hào)進(jìn)行了介紹,并對(duì)資源解映射時(shí)需要的幀結(jié)構(gòu)、時(shí)隙結(jié)構(gòu)和物理資源等概念進(jìn)項(xiàng)了闡述,給出了物理層下行信道處理的一般過(guò)程。其次,給出了五個(gè)物理信道資源解映射的整體流程,并分別給出了五個(gè)信道的資源解映射方案,對(duì)五個(gè)物理信道的資源解映射過(guò)程進(jìn)行仿真,計(jì)算了每個(gè)信道的映射位置,提取了一個(gè)子幀中五個(gè)信道的全部數(shù)據(jù)。之后,對(duì)整個(gè)解映射模塊的可靠性和穩(wěn)定性進(jìn)行測(cè)試。最后,根據(jù)資源解映射方案給出了對(duì)應(yīng)的FPGA實(shí)現(xiàn)方案。將資源解映射模塊分為五個(gè)部分:PBCH資源解映射模塊、PCFICH資源解映射模塊、PDCCH資源解映射模塊、PDSCH資源解映射模塊和PHICH資源解映射模塊,給出了每個(gè)模塊的仿真波形圖,之后,對(duì)五部分進(jìn)行聯(lián)合仿真。
[Abstract]:With the development of wireless communication technology, the strong demand for the communication industry and the fierce competition among the three major domestic operators, the 3GPP organization officially launched the LTE (long-term evolution) project. In TD-LTE system, resource mapping technology is very important in receiving signal correctly, decoding, stability and high performance of the whole system. TD-LTE system has flexible frame configuration and variable system bandwidth. The time-frequency domain resource block of two-dimensional structure is based on OFDM technology. However, this also makes it more difficult for the terminal to separate the physical channels and signals from the frame structure and restore their respective data. Therefore, it is necessary to study the downlink resource mapping of TD-LTE. This paper designs and implements a stable and high-performance solution to resource mapping. Firstly, five downlink physical channels and signals in the physical layer of R10 protocol of LTE are introduced, and the frame structure needed for resource unmapping is also discussed. The concepts of slot structure and physical resources are described, and the general process of downlink channel processing in physical layer is given. Secondly, the whole flow of resource unmapping of five physical channels is given, and the resource unmapping schemes of five channels are given respectively. The process of resource unmapping of five physical channels is simulated, and the mapping position of each channel is calculated. All the data of five channels in a subframe are extracted. Finally, the corresponding FPGA implementation scheme is given according to the resource unmapping scheme. The resource unmapping module is divided into five parts: PBCH resource unmapping module, PCFICH resource unmapping module, PDCCH resource unmapping module, PDSCH resource unmapping module and PHICH resource unmapping module. The simulation waveform diagram of each module is given. Five parts of the joint simulation.
【學(xué)位授予單位】：河北工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN929.5;TN791

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相關(guān)碩士學(xué)位論文 前1條

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本文編號(hào)：2275396