AI SearchChip level LMMSE equalizer receivers in downlink of the wideband code division multiple access system (Record no. 17076)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 04365nas|a2200445 i 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260817172700.0 |
| 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 | .b11861289 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.TC-01-08 |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Lai Xuan Tung |
| 245 10 - TITLE STATEMENT | |
| Title | Chip level LMMSE equalizer receivers in downlink of the wideband code division multiple access system |
| 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 | 55 p. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. TC-01-08 |
| 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. | As demand for wireless communications continues to grow, third-generation cellular communications systems are being standardized to provide flexible voice and data services. Third-generation Wideband Code Division Multiple Access (WCDMA) systems promise significantly higher data rates (up to 2 Mbits/s) and a new array of mobile communication services, such as video teleconferencing and web browsing, which especially require uplink and downlink performance improvement. In the near future, the downlink capacity is expected to be more crucial than the capacity of the uplink due to the asymmetric capacity requirements, i.e., the downlink direction should offer higher capacity than the uplink. Therefore the employment of efficient downlink receivers is important. One promising approach is to use chip level channel equalizer type downlink receiver. In the thesis, performance of the adaptive chip level Linear Minimum Mean Square Error Equalizer receivers for downlink of WCDMA systems employing long scrambling code is studied over a correlated Rayleigh multipath fading channel through simulation. The adaptive chip level Linear Minimum Mean Square Error Equalizer receivers and conventional Rake receiver are implemented in this simulation based on the parameters closely matched to UMTS/IMT 2000 requirement. Two adaptive LMMSE equalization techniques for downlink WCDMA with QPSK modulation have been studied: estimating the inverse matrix and using Griffiths' algorithms. Performance of both adaptive equalization techniques has been investigated and compared with Conventional Rake receivers in a correlated fading environment. The adaptive chip level LMMSE Equalizer receivers essentially estimate the multiuser chip and thus, restore the orthogonality between different own cell users' signal. Simulation results show that while the conventional Rake receiver is impaired very much by the interfering user's signal, LMMSE equalizer receiver can sustain the effects of MAL The adaptive chip level LMMSE Equalizer receivers give superior performance to the conventional Rake since they are able to suppress intracell MAI based on equalizing the effects of the multipath channel. Based on the simulation results, it is shown that the method of estimating inverse matrix gives slightly better performance than the Griffiths' algorithms. |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Code division multiple access |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Broadband communication systems |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Equalizers (Electronics) |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Makelainen, Kimmo, |
| 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 | Sharma, A.B., |
| 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-01-08 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B11034">http://203.159.5.9/ait-thesis/detail.php?q=B11034</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b11861289 |
| 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 |
| -- | u |
| -- | 0 |
| 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 : 30050120810071 |
| CREATED | CREATED : 2014-10-04 |
| RECORD Id | RECORD # : i12789495 |
| LPATRON | LPATRON : 0 |
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| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050160045174 |
| CREATED | CREATED : 2016-03-03 |
| RECORD Id | RECORD # : i12888606 |
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| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050211032486 |
| CREATED | CREATED : 2021-04-30 |
| RECORD Id | RECORD # : i13341819 |
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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 | 17/08/2026 | 50.00 | AIT Thesis no.TC-01-08 | 30050120810071 | 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-01-08 | 30050160045174 | 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-01-08 | 30050211032486 | 17/08/2026 | 1 | 17/08/2026 | 20-AIT Publication |