標題: 第五代巨量天線徑分多重接取蜂巢式系統中傳輸方法之研究
A Study On the Transmission Methods for the Fifth Generation Massive Antenna MDMA Cellular System
作者: 蕭武璋
黃家齊
Siew, Woo Chiung
Huang, Chia-Chi
電信工程研究所
關鍵字: 第五代行動系統;第五代巨量天線徑分多重接取蜂巢式系統;the Fifth Generation;A Study On the Transmission Methods
公開日期: 2017
摘要: 本論文首先結合巨量天線徑分多工與MC-CDM調變來達成5G系統的資料傳輸,研究內容包含上行與下行系統在毫米波頻段的模擬。無論上行或下行系統,每使用者利用展頻碼來達成資料多工,而不是利用展頻碼來區分使用者。在上行接收端,我們使用領航碼進行通道估計後,再利用不同等化器和天線分集來進行多用戶偵測,並且在平行干擾消除中比較兩種通道估計(單獨使用領航碼估計通道和使用重建信號(資料+領航碼)估計通道)的方法。在下行系統中,也同樣利用不同等化器將所有使用者結合在不同天線上,使所有使用者能在同一頻寬下進行資料傳輸。最後我們電腦模擬此系統的結果將與基本OFDM、SC-FDE和CDM-FDE調變方式的巨量天線徑分多工的系統的模擬結果進行比較。
In this thesis, we brief study Multi-carrier Code Division Multiplexing (MC-CDM) modulation in the millimeter wave band, which includes both the uplink and downlink transmission, based on a Massive Antenna MDMA cellular system architecture. In the uplink or downlink system, each user performs code spreading for data multiplexing, rather than for code division to distinguish different user. For the uplink receiver, we use the pilot code to do channel estimation and perform a partial equalization add the antenna diversity combining to detect each user’s data. After data detection in the initial stage, we perform a parallel interference cancellation to reduce the bit error rate further. In the downlink system, we perform a partial pre-equalization before the data transmission. Finally, we compare the MC-CDM simulation results with the simulation results of the OFDM, SC-FDE and CDM-FDE based massive antenna MDMA cellular systems.
URI: http://etd.lib.nctu.edu.tw/cdrfb3/record/nctu/#GT070260322
http://hdl.handle.net/11536/141881
顯示於類別:畢業論文