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TD-LTE downlink multi-antenna technology and DSP implementation

Author: XiangRongLong
Tutor: YanBo
School: University of Electronic Science and Technology
Course: Communication and Information System
Keywords: TD-LTE Multi-antenna technology MIMOs MIMO detection
CLC: TN929.5
Type: Master's thesis
Year: 2011
Downloads: 80
Quote: 0
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Abstract


LTE as the evolution of 3G technology , orthogonal frequency division multiplexing (Orthgonal Frequence Division Multiplexing, OFDM) and MIMO ( Multiple - Input Multiple -Output , MIMO ) technology as the core spectrum of 20MHz to provide downlink 100Mbit / s and uplink peak data rate of 50Mbit / s , to improve the performance of cell edge users , improve cell capacity and reducing system latency . At present, the global mobile communications industry is able to promote the sustainable development of the mobile communications industry is considered an important means of \First , the article describes the LTE downlink physical layer concept TDD and FDD systems data frame structure , and the downlink physical resources and gave a brief introduction to the physical downlink shared channel signal processing flow for the subsequent chapters of TD-LTE downlink system multi-antenna technology has laid a theoretical foundation . Then, the TD-LTE downlink multi-antenna technology to do the in-depth study describes the realization of the principle of the TD-LTE system in a variety of multi-antenna technology and system capacity . TD-LTE system supports multi-antenna technology , including spatial multiplexing, transmit diversity and beamforming techniques . The multi-antenna technology for the system provides a channel capacity of the communication system in the case of space diversity gain and spatial multiplexing gain , and therefore does not increase the additional power of the transmitter can also be remarkably improved . The multi-user MIMO (Multiple-User MIMO, MU-MIMO) technology allows a plurality of the UE can share the same channel resources without generating mutual interference , allowing to maximize the channel capacity . The third part of this article describes the mode space division multiplexing MIMO detection algorithm theory , and through to the Matlab build a TD-LTE physical downlink shared channel system model , tested the performance of various MIMO detection algorithm . MSC8156 multicore DSP algorithm optimization TD-LTE physical downlink shared channel , multi - antenna signal transmitter and multi-antenna signal detection . Finally, this paper analyzes the the MSC8156 DSP system operation and DSP implementation of multi-antenna processing algorithms to system testing , the test results show that the system design of the DSP program to meet the requirements of TD-LTE physical downlink shared channel .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Mobile Communications
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