TWI456930B - 無資料輔助時間同步之合作式多輸入多輸出正交分頻多工裝置 - Google Patents

無資料輔助時間同步之合作式多輸入多輸出正交分頻多工裝置 Download PDF

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Publication number
TWI456930B
TWI456930B TW101118880A TW101118880A TWI456930B TW I456930 B TWI456930 B TW I456930B TW 101118880 A TW101118880 A TW 101118880A TW 101118880 A TW101118880 A TW 101118880A TW I456930 B TWI456930 B TW I456930B
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TW
Taiwan
Prior art keywords
transmitters
subcarriers
distance
data
time synchronization
Prior art date
Application number
TW101118880A
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English (en)
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TW201349783A (zh
Inventor
Chin Liang Wang
Hung Chin Wang
Mian Cheng Lin
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Nat Univ Tsing Hua
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Publication date
Application filed by Nat Univ Tsing Hua filed Critical Nat Univ Tsing Hua
Priority to TW101118880A priority Critical patent/TWI456930B/zh
Priority to US13/602,416 priority patent/US8665983B2/en
Publication of TW201349783A publication Critical patent/TW201349783A/zh
Application granted granted Critical
Publication of TWI456930B publication Critical patent/TWI456930B/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2662—Symbol synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H04L5/0041—Frequency-non-contiguous
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2669—Details of algorithms characterised by the domain of operation
    • H04L27/2671—Time domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2676—Blind, i.e. without using known symbols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Radio Transmission System (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Claims (5)

  1. 一種無資料輔助時間同步之合作式多輸入多輸出正交分頻多工裝置，係適用於多個傳送器，其包括：至少二傳送器，其中同一傳送器係用以等間隔地擺放子載波，而不同之傳送器之間擺放子載波之間隔不同，並藉由傅立葉轉換與反傅立葉轉換將不同間隔之子載波在時域與頻域上進行轉換以產生不同之訊號週期，藉此產生類似不等週期同步模型(Unequal Period Synchronization Patterns,UPSP)卻無需訓練序列之隨機正交分頻多工(Orthogonal Frequency Division Multiplexing,OFDM)數據符號，接著使接收端所估測之數個時間同步點進行多數決優化(Majority Vote Refinement,MVR)，其中該二傳送器中，第一傳送器彼此等間隔地擺放子載波之距離為4，第二傳送器彼此等間隔地擺放子載波之距離為6；其中，該裝置係可以使用任意數量之隨機OFDM數據符號以連續地執行時間同步步驟。
  2. 依申請專利範圍第1項所述之無資料輔助時間同步之合作式多輸入多輸出正交分頻多工裝置，係以下列矩陣表示載波分配之方式： 其中Ω1與Ω2分別代表設定分配到第一傳送器及第二傳送器之子載波集合；以及N代表自然數之設定。
  3. 依申請專利範圍第2項所述之無資料輔助時間同步之合作式 多輸入多輸出正交分頻多工裝置，進一步包括下列矩陣： 其中a łb 代表a 不是b 之因數；以及gcd(d1 ,d2 )代表d1 及d2 之最大公因數，且Ω1 ∩Ω2 =Ø，即Ω1 與Ω2 之交集為空集。
  4. 依申請專利範圍第1項所述之無資料輔助時間同步之合作式多輸入多輸出正交分頻多工裝置，係可進一步包括三個傳送器，其中第一傳送器彼此等間隔地擺放子載波之距離為6，第二傳送器彼此等間隔地擺放子載波之距離為9，以及第三傳送器彼此等間隔地擺放子載波之距離為15。
  5. 依申請專利範圍第1項所述之無資料輔助時間同步之合作式多輸入多輸出正交分頻多工裝置，係可進一步包括四個傳送器，其中第一傳送器彼此等間隔地擺放子載波之距離為8，第二傳送器彼此等間隔地擺放子載波之距離為12，第三傳送器彼此等間隔地擺放子載波之距離為18，以及第四傳送器彼此等間隔地擺放子載波之距離為20。
TW101118880A 2012-05-25 2012-05-25 無資料輔助時間同步之合作式多輸入多輸出正交分頻多工裝置 TWI456930B (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
TW101118880A TWI456930B (zh) 2012-05-25 2012-05-25 無資料輔助時間同步之合作式多輸入多輸出正交分頻多工裝置
US13/602,416 US8665983B2 (en) 2012-05-25 2012-09-04 Apparatus for cooperative MIMO OFDM using non-data-aided timing synchronization

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW101118880A TWI456930B (zh) 2012-05-25 2012-05-25 無資料輔助時間同步之合作式多輸入多輸出正交分頻多工裝置

Publications (2)

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TW201349783A TW201349783A (zh) 2013-12-01
TWI456930B true TWI456930B (zh) 2014-10-11

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US (1) US8665983B2 (zh)
TW (1) TWI456930B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI624166B (zh) * 2017-01-25 2018-05-11 國立清華大學 多載波通訊系統及其通道估測方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107733827B (zh) * 2016-08-12 2020-04-14 华为技术有限公司 一种信号发送方法、网络设备和终端设备

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100080114A1 (en) * 2008-08-29 2010-04-01 Indian Institute Of Technology Low complexity bandwidth efficient carrier frequency offset estimation technique for ofdma uplink transmissions

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100749447B1 (ko) * 2004-12-21 2007-08-14 한국전자통신연구원 고속 휴대 인터넷 시스템에서 타이밍 에러와 주파수오프셋을 추정하는 방법 및 그 장치

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100080114A1 (en) * 2008-08-29 2010-04-01 Indian Institute Of Technology Low complexity bandwidth efficient carrier frequency offset estimation technique for ofdma uplink transmissions

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Wang, Hung-Chin and Chin-Liang Wang, "A Compact Preamble Design for Synchronization in Distributed MIMO OFDM Systems, "Vehicular Technology Conference (VTC Fall), 2011 IEEE *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI624166B (zh) * 2017-01-25 2018-05-11 國立清華大學 多載波通訊系統及其通道估測方法

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US20130315324A1 (en) 2013-11-28
TW201349783A (zh) 2013-12-01
US8665983B2 (en) 2014-03-04

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