AI SearchDynamic channel assignment in OVSF-CDMA for third generation wireless systems (Record no. 31936)
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|---|---|
| fixed length control field | 04245nas|a2200481 i 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818094243.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 030919s2002 th uzm rtt 00| a1eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b11899359 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT RSPR no.TC-02-05 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Sharma, Rajesh Kumar |
| 245 10 - TITLE STATEMENT | |
| Title | Dynamic channel assignment in OVSF-CDMA for third generation wireless systems |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 2002 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 69 leaves |
| 490 1# - SERIES STATEMENT | |
| Series statement | Research studies project report ; |
| Volume/sequential designation | no. TC-02-05 |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Research Studies Project Report (M.Eng.) - Asian Institute of Technology, 2002 |
| 500 ## - GENERAL NOTE | |
| General note | A research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Advanced Technologies |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Emerging Third Generation (3G) wireless standards promise to support the relative higher and variable data rate services with various QoS considerations. Wideband Code Division Multiple Access (W-CDMA) scheme has been proposed by the Universal Mobile Telecommunications System (UMTS) for fulfilling these requirements. MCCDMA and OVSF-CDMA are some of the CDMA schemes for implementation under 3G systems. OVSF-CDMA is better suited than MC-CDMA for its hardware simplicity, but suffers from code blocking. To eliminate the code blocking is an important issue in OVSF-CDMA. This research work is mainly concerned with the elimination of code blocking with a suitable dynamic code assignment (DCA) scheme. The DCA guarantees the admission of a new call if the remaining capacity of the system can support it regardless of the orthogonality constraint that can arise in the system. This is done by reassigning the calls in descendant codes to other unused codes to satisfy the orthogonality constraint. An optimum algorithm which uses minimum number of reassignment is proposed. The work is then extended to investigate the performance of the system in terms of code utilization, overall blocking and Individual blackings. The work is further extended to study the performance of the system with traffics of various QoS classes (Conversational, Streaming, Interactive and Background) introduced by UMTS for Third Generation Partnership Project (3GPP). Based on the simulation results, the DCA can improve the performance of the system by improving the code utilization and decreasing the blocking of higher rate calls. The guard capacity concept with delay is utilized to the low priority calls which can be further helpful to reduce the blocking of higher rate and higher priority calls. It is observed that a proper choice of the guard capacity is important to get the desirable performance of the system. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Code division multiple access |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Orthogonalization methods |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Wireless communication systems |
| 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 | Ahmed, Kazi Mohiuddin, |
| Relator term | Chairperson |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Erke, Tapio J., |
| Relator term | Examination Committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Teerapat Sanguankotchakorn, |
| 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 | Research studies project report ; |
| Volume/sequential designation | no. TC-02-05 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B08001">http://203.159.5.9/ait-thesis/detail.php?q=B08001</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b11899359 |
| b | mnait |
| c | u |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 240503 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 030919 |
| First date, FD (RLIN) | m |
| -- | a |
| -- | u |
| -- | 0 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 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 : 30050120552350 |
| CREATED | CREATED : 2012-03-12 |
| RECORD Id | RECORD # : i12719894 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120349310 |
| CREATED | CREATED : 2016-08-06 |
| RECORD Id | RECORD # : i13026409 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050211032965 |
| CREATED | CREATED : 2021-04-30 |
| RECORD Id | RECORD # : i13341340 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050211023469 |
| CREATED | CREATED : 2022-07-02 |
| RECORD Id | RECORD # : i13362513 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type | Cost, normal purchase price |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT RSPR no.TC-02-05 | 30050120552350 | 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 RSPR no.TC-02-05 | 30050120349310 | 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 | AIT RSPR no.TC-02-05 | 30050211032965 | 18/08/2026 | 1 | 18/08/2026 | 20-AIT Publication | 50.00 | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | AIT RSPR no.TC-02-05 | 30050211023469 | 18/08/2026 | 2 | 18/08/2026 | 20-AIT Publication | 50.00 |