AI SearchApplication of orthogonal frequency division multiplexing with concatenated coding in wireless ATM (Record no. 6740)
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| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260817162927.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 050799s1998 th uzm rtt 00| a1eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b11754400 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.TC-98-14 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Jayalath, Anagiyaddage Dhammika Srilal |
| 245 10 - TITLE STATEMENT | |
| Title | Application of orthogonal frequency division multiplexing with concatenated coding in wireless ATM |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 1998 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 97 p. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. TC-98-14 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Advanced Technologies |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Eng.) - Asian Institute of Technology, 1998 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | The delay spread, fading and the Doppler spread in a mobile-radio channel cause a significant degradation of the signal to noise ratio of a wireless communication system. The degradation is prominent when the data rate associated is high as in the case of wireless ATM (W ATM). Proposing a suitable coding and modulation scheme for W ATM to combat the channel distortions is the prime concern of this study. Orthogonal frequency division multiplexing (OFDM) is one of the most promising solutions for high data rate transmissions in a frequency selective radio channels. ATM is designed for transmission links having very low bit error rate. OFDM incorporated with a suitable channel coding scheme can be used to transmit ATM cells, in frequency selective fading environment. The concatenated coding schemes, Reed Solomon (RS) code with trellis coded modulation (TCM) and Reed Solomon code with turbo trellis coded modulation (TTCM) are investigated for fading channels. Signal to noise ratio required to achieve an average bit error rate (BER) of 10-5 was found by simulation. This particular BER was selected as ATM transmission needs high quality transmission links, in which a BER less than 10- 5 can be achieved. Neither TTCM nor TCM can be used for WATM applications alone as their BER performances give rise to a higher error floors. The concatenated schemes investigated here do not have an error floor in fading channels. Both concatenated schemes (TCMIRS & TTCM/RS) investigated have a very high coding gain compared to uncoded case (TCM/RS-8 dB- and TTCMIRS-9 dB at 10-2 BER). TTCM/RS scheme outperforms TCM/RS scheme in frequency selective fading channel, having a 3 dB gain at 10-5 BER. CC(16-QAM, 64 states)/RS scheme showed a performance very close to the TCM/RS performance, having slightly better performance after 15 dB. High peak to average power ratio and the higher sensitivity to frequency offset are the major draw-backs of OFDM. Peak windowing to reduce P APR is studied here. Peak windowing can be used to reduce the P APR by 40% with only a small degradation of BER performance. The maximum PAPR observed was 13.6 dB and it was reduced up to 8 dB with peak windowing giving only about 1.25 dB degradation of BER at 10-5 {u2022} It was also found that the proposed system is highly sensitive to frequency offset. Therefore, it is very important to use a reliable frequency offset estimation and correction scheme with the proposed system. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Asynchronous transfer mode |
| 650 #0 - 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 | Ahme, Kazi Mohiuddin, |
| Relator term | Examination committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Erke, Tapio J., |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Government of Finland, |
| 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-98-14 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B13598">http://203.159.5.9/ait-thesis/detail.php?q=B13598</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b11754400 |
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| c | y |
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| a | 240710 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 990705 |
| First date, FD (RLIN) | m |
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| -- | y |
| -- | 0 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
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| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
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| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
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| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
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| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
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| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 22-AIT Thesis (Replacement) |
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| Koha item type | 40-Archives |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 20-AIT Publication |
| 909 ## - LOCAL ITEMS USED | |
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| CREATED | CREATED : 2014-04-28 |
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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 | Archives | 17/08/2026 | 50.00 | AIT Thesis no.TC-98-14 | 30050120808588 | 17/08/2026 | 3 | 17/08/2026 | 22-AIT Thesis (Replacement) | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 17/08/2026 | AIT Thesis no.TC-98-14 | 30050160045570 | 17/08/2026 | 17/08/2026 | 40-Archives | ||||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 17/08/2026 | 50.00 | AIT Thesis no.TC-98-14 | 30050211017826 | 17/08/2026 | 1 | 17/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 17/08/2026 | 50.00 | AIT Thesis no.TC-98-14 | 30050211017818 | 17/08/2026 | 2 | 17/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 17/08/2026 | 50.00 | AIT Thesis no.TC-98-14 | 30050211017800 | 17/08/2026 | 4 | 17/08/2026 | 20-AIT Publication | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 17/08/2026 | 50.00 | AIT Thesis no.TC-98-14 | 30050211017792 | 17/08/2026 | 5 | 17/08/2026 | 20-AIT Publication |