Multi-Carrier Spread-Spectrum: For Future Generations Wireless Systems,

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Springer Science & Business Media, Dec 31, 2003 - Computers - 516 pages
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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.
  

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Contents

Broadband Wireless Access Based on VSFOFCDM and VSCRFCDMA and its Experiments
3
An OFDM Based System Proposal for 4G Downlinks
15
Channel Overloading in CDMA with Scalable Signature Sets and Turbo Detection
23
Principle and Applications
31
On PilotSymbol Aided Channel Estimation for MCCDMA in the Presence of Cellular Interference
39
New 2DMCDSSSCDMA Techniques based on Twodimensional Orthogonal Complete Complementary Codes
49
Performance of Multirate Transmission Schemes for MCCDMA Systems
57
Priority Swapping SubcarrierUser Allocation Technique for Adaptive Multi carrier Based Systems
65
Performance Analysis of the Downlink and Uplink of MCCDMA with Carrier Frequency Offset
259
Space Time MultiUser Detection for MCCDMA Systems in the Presence of Channel Estimation Errors
269
Synchronisation and Power Control Processes for Uplink Multicarrier Systems based on MCCDMA Technique
279
A Novel Soft Handoff Technique using STTD for MCCDMA in a Frequency Selective Fading Channel
289
Array Antenna Assisted Doppler Spread Compensator with Vehicle Speed Estimator for OFDM Receiver
299
PreFiltering Techniques Using Antenna Arrays for Downlink TDD MCCDMA Systems
307
Downlink Strategies Using Antenna Arrays for Interference Mitigation in MultiCarrier CDMA
315
Antenna Diversity Techniques for SCFDE A System Analysis
327

Subband Loading for PreEqualized Uplink OFDMCDMA Systems
73
A Study of Subcarrier Power Control of OFDM Transmission Diversity combined with Data Spreading
81
Packet ReTransmission Options for the SSOFDMFTA System
89
Comparison of Iterative Detection Schemes for MIMO Systems with Spreading Based on OFDM
101
Turbo Product Codes for an Orthogonal Multicarrier DSCDMA System
115
Performance Evaluation of Diversity Gain and Coding Gain in Coded Orthogonal MultiCarrier Modulation Systems
123
Adaptive Coding in MCCDMAFDMA Systems with Adaptive SubBand Allocation
133
A Study of Multicarrier CDMA Systems with Differential Modulation
141
Spreading Sequences for MultiCarrier MCCDMA with Digital Prolate Functions
151
Analysis of Linear Receivers for MCCDMA with Digital Prolate Functions
159
Evaluation of Different Spreading Sequences for MCCDMA in WLAN Environments
167
Uplink and Downlink MCDSCDMA Synchronization Sensitivity
177
Study of Symbol Synchronization in MCCDMA Systems
186
Iterative Channel Estimation Approach for SpaceFrequency Coded OFDM Systems with Transmitter Diversity
195
Comparison of Pilot Multiplexing Schemes for ML Channel Estimation in Coded OFDMCDMA
203
Data Aided Channel Estimation for Wireless MIMOOFDM Systems
211
Channel Estimation and Performances
219
Adaptive Pilot Symbol Aided Channel Estimation for OFDM Systems
227
Exploiting APriori Information for Channel Estimation in Multiuser OFDM Mobile Radio Systems
235
Timing of the FFTWindow in SCFDE Systems
243
Equalization for MultiCarrier Systems in TimeVarying Channels
251
Performance of MCCDMA vs OFDM in Rayleigh Fading Channels
337
Efficient Diversity Techniques Using Linear Precoding and STBC for MultiCarrier Systems
345
Performance of MMSE STBC MCCDMA over Rayleigh and MIMO METRA Channels
353
Comparison between SpaceTime Block Coding and Eigen Beamforming in TDD MIMOOFDM Downlink with Partial CSI Knowledge at the TX Side
363
Performance Results
371
SpaceFrequency Coding and Signal Processing for Downlink MIMO MCCDMA
379
Adaptive VBLAST based Broadband MIMO Systems in Spatially Correlated Channels
387
Design of the Low Complexity Turbo MIMO Receiver for WLAN
395
Distributed Multiplexing in Multicarrier Wireless Networks
405
An InterCell Interference Suppression Technique Using Virtual Subcarrier Assignment VISA for MCCDMA Uplink
413
Synchronism Loss Effect on the Signal Detection at the Base Station using an OFDMCDMA System
421
Minimum BER Multiuser Transmission for SpreadSpectrum Systems in Frequency Selective Channels
429
Combined Pre and PostEqualization Techniques for Uplink Time Division Duplex MCCDMA in Fading Channels
439
Time Variant Channel Equalization for MCCDMA via Fourier Basis Functions
451
Impact of Channel Variation on a Code Multiplexed Pilot in Multicarrier Systems
459
Joint Compensation of IQ Imbalance Frequency Offset and Phase Noise
473
Practical Issues of PIC in MCCDMA Systems
481
OFDM DSCDMA and MCCDMA Systems with Phase Noise and Frequency Offset Effects
489
A New Phase Noise Mitigation Method in OFDM Systems with Simultaneous CPE and ICI Correction
501
Performance Comparison of OFDM Transmission affected by Phase Noise with and without PLL
509
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About the author (2003)

Stefan Kaiser was the first researcher to address the institutional and legal aspects of the future air navigation systems in a pioneering thesis presented to the Institute of Air and Space Law, McGill University.

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