Multi-Carrier Spread-Spectrum: For Future Generations Wireless Systems,Khaled Fazel, S. Kaiser The benefits and success of multi-carrier (MC) modulation on one side and the flexibility offered by the spread spectrum (SS) technique on the other side have motivated many researchers to investigate the combination of both techniques since 1993. This combination known as multi-carrier spread spectrum (MC-SS) benefits from the advantages of both systems and offers high flexibility, high spectral efficiency, simple detection strategies, narrow-band interference rejection capability, etc. The basic principle of this combination is straightforward: The spreading is performed as direct sequence spread spectrum (DS-SS) but instead of transmitting the chips over a single carrier, several sub-carriers are employed. The MC modulation and demodulation can easily be realized in the digital domain by performing IFFT and FFT operations. The separation of the users' signals can be performed in the code domain. MC-SS systems can perform the spreading in frequency direction, which allows for simple signal detection strategies. Since 1993, MC-SS has been deeply studied and new alternative solutions have been proposed. Meanwhile, deep system analysis and comparison with DS-CDMA have been performed that show the superiority of MC-CDMA. The aim of this book is to edit the ensemble of the newest contributions and research results in this new field that have been presented during the 4th International Workshop on Multi-Carrier Spread-Spectrum (MC-SS 2003), held in Oberpfaffenhofen, Germany. |
Contents
An OFDM Based System Proposal for 4G Downlinks | 15 |
F Vanhaverbeke M Moeneclaey | 30 |
New 2DMCDSSSCDMA Techniques based on Twodimensional | 49 |
Priority Swapping SubcarrierUser Allocation Technique for Adaptive | 65 |
A Study on Subcarrier Power Control of OFDM Transmission Diversity 8 | 81 |
R Novak W A Krzymien | 100 |
Comparison of Iterative Detection Schemes for MIMO Systems with | 101 |
Turbo Product Codes for an Orthogonal Multicarrier DSCDMA System | 115 |
Analysis of Linear Receivers for MCCDMA with Digital Prolate Functions | 159 |
Evaluation of Different Spreading Sequences for MCCDMA in WLAN | 167 |
Uplink and Downlink MCDSCDMA Synchronization Sensitivity | 177 |
Study of Symbol Synchronization in MCCDMA Systems | 186 |
Iterative Channel Estimation Approach for SpaceFrequency Coded OFDM | 195 |
Comparison of Pilot Multiplexing Schemes for ML Channel Estimation in | 203 |
Channel Estimation and Performances | 219 |
Exploiting APriori Information for Channel Estimation in Multiuser OFDM | 235 |
Performance Evaluation of Diversity Gain and Coding Gain in Coded | 123 |
Adaptive Coding in MCCDMAFDM Systems with Adaptive SubBand | 133 |
A Study of Multicarrier CDMA Systems with Differential Modulation | 141 |
Spreading Sequences for MultiCarrier MCCDMA Systems with Nonlinear | 151 |
Equalization for MultiCarrier Systems in TimeVarying Channels | 251 |
Space Time MultiUser Detection for MCCDMA Systems in the Presence of | 269 |
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Multi-Carrier Spread-Spectrum: For Future Generation Wireless Systems ... Khaled Fazel,S. Kaiser No preview available - 2010 |
Common terms and phrases
2004 Kluwer Academic adaptive algorithm allocation ASBA assumed average AWGN bandwidth bit error rate block broadband carrier frequency offset CDMA CDMA system channel coding channel estimation chip combining Communications convolutional code correlation cyclic prefix data rate data symbols decoding degradation delay denotes detection detector diversity Doppler downlink DS-CDMA E/No Eb/No fading channel Fazel Figure frequency domain frequency selective IEEE Trans interference cancellation interleaving iterative Kaiser eds load maximum MC-CDMA system MC-DS-CDMA MMSE mobile modulation Multi-Carrier Spread-Spectrum multicarrier CDMA multiple access multiplexing multiuser noise number of users OFDM symbol OFDM system orthogonal packet PAPR parameters performance pilot symbols PN/O proposed QPSK ratio Rayleigh fading re-transmission receive antenna received signal samples scenario scheme spectral efficiency Spread-Spectrum spreading code spreading factor spreading sequences sub-band subcarrier synchronization technique throughput transmission transmitted turbo code uncoded uplink vector VSF-OFCDM Wiener filter wireless access