AI SearchInvestigation of synchronization in OFDM system in mobile radio environment (Record no. 64790)
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| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818144340.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 020717s2001 th u m rtt 00| a1eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b11861344 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.TC-01-14 |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Tran Cao Quyen |
| 245 10 - TITLE STATEMENT | |
| Title | Investigation of synchronization in OFDM system in mobile radio environment |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 2001 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 39 p. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. TC-01-14 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Eng.) - Asian Institute of Technology, 2001 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Orthogonal Frequency Division Multiplexing (OFDM) has recently become an attractive research area because of its desirable characteristics in mobile communications such as the robustness against multipath fading and impulse noise compared to single carrier systems. In OFDM, it is difficult to set up perfect synchronization between the transmitter and the receiver due to intercarrier interference (ICI) among the carriers that causes the frequencies to be shifted. This thesis investigates the synchronization techniques in OFDM system under this scenario. A new technique is proposed for carrier frequency offset (CFO) compensation as a combination of windowing and self ICI cancellation method. The transmitted data is mapped to two consecutive subcarriers with opposite signs according to self ICI coder. Then the whole signal is shaped by windowing functions to keep the orthogonality between subcarriers. To evaluate the performance of windowing method, self ICI method as well as the proposed scheme, simulations have been carried out for additive white gaussian noise (A WGN) and multipath fading channels. The results show that windowing scheme is better than normal system at low CFO. At high CFO, the performance of windowing became worse. Besides, the proposed scheme give better performance than self ICI cancellation scheme at offset up to 50 percent of subcarrier spacing. However, the combined scheme needs more bandwidth. A technique claimed for bandwidth efficiency by using symmetry property of Discrete Fourier Transform (DFT) is investigated. In this technique N/2 symbols are transmitted instead of N and the received signal will be constructed perfectly. The derivation shows that it is impossible to construct the transmitted OFDM signal from N/2 samples and the received signal has no symmetry when complex transmitted data and channel coefficient are taken into account. Consequently, the received signal cannot be completely reconstructed and bandwidth efficiency cannot be obtained. |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Synchronization |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Mobile communication systems |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Rajatheva, R.M.A.P, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Ahmed, Kazi Mohiuddin, |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Fernando, W.A.C., |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Civil Aviation Training Center of Viet Nam, |
| Relator term | Scholarship donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. TC-01-14 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B11083">http://203.159.5.9/ait-thesis/detail.php?q=B11083</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b11861344 |
| b | mnait |
| c | u |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 240402 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 020717 |
| First date, FD (RLIN) | m |
| -- | a |
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| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 22-AIT Thesis (Replacement) |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 20-AIT Publication |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120810022 |
| CREATED | CREATED : 2014-10-04 |
| RECORD Id | RECORD # : i12789331 |
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| Barcode | Barcode : 30050160045117 |
| CREATED | CREATED : 2016-03-03 |
| RECORD Id | RECORD # : i12888734 |
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| Barcode | Barcode : 30050211032429 |
| CREATED | CREATED : 2021-04-30 |
| RECORD Id | RECORD # : i1334187x |
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| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Cost, normal purchase price | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | 50.00 | AIT Thesis no.TC-01-14 | 30050120810022 | 18/08/2026 | 3 | 18/08/2026 | 22-AIT Thesis (Replacement) | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no.TC-01-14 | 30050160045117 | 18/08/2026 | 18/08/2026 | 40-Archives | ||||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | 50.00 | AIT Thesis no.TC-01-14 | 30050211032429 | 18/08/2026 | 1 | 18/08/2026 | 20-AIT Publication |