Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/16940
Title: Performance studies and receiver design of a MB-OFDM UWB system
Authors: PNG KHIAM BOON
Keywords: MB-OFDM, UWB, Frequency Offset, LDPC codes, DS-CDMA, chip-interleaving
Issue Date: 29-Sep-2005
Source: PNG KHIAM BOON (2005-09-29). Performance studies and receiver design of a MB-OFDM UWB system. ScholarBank@NUS Repository.
Abstract: A Multi-bands Orthogonal Division Multiplexing (MB-OFDM) Ultra Wide-band (UWB) system has been proposed for the IEEE 802.15 Wireless Personal Area Networks. The MB-OFDM UWB system is extremely sensitive to the frequency offset between transmitter and receiver. A normalized frequency offset of 40 ppm can results in the total breakdown of the transmission link. In this thesis, we proposed a novel frequency offset estimation and compensation algorithm for the system, which compared favorably to conventional estimation algorithms in terms of performance and computation complexity, and limits the performance degradation due to frequency offset to within 1 dB. Moreover, a complete receiver design with channel estimation, synchronization and frequency offset compensation algorithms is detailed. Also, performance studies of high rate MB-OFDM UWB system employing low-density parity-checks code and using a direct spreading with chip interleaving scheme is carried out. Both modifications have been proven through simulations to improve the system performance considerably.
URI: http://scholarbank.nus.edu.sg/handle/10635/16940
Appears in Collections:Master's Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
ThesisPDF.pdf1.3 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

295
checked on Dec 11, 2017

Download(s)

223
checked on Dec 11, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.