Frequency-Domain Equalization for Block CDMA Transmission -- Different Guard Interval Techniques for OFDM: Performance Comparison -- An Analysis of OFDMA, Precoded Ofdma and SC-FDMA for the Uplink in Cellular Systems -- Influence of a Cyclic Prefix on the Spectral Power Density of Cyclo-Stationary Random Sequences -- Downlink Scheduling for Multiple Antenna Multi-Carrier Systems with Dirty Paper Coding Via Genetic Algorithms -- Exit-Chart Analysis of Iterative Space-Time-Frequency Coded Multi-Carrier Receivers -- Interleaver for High Parallelizable Turbo Decoder -- Multi-User Detection Techniques for Potential 3GPP Long Term Evolution (LTE) Schemes -- Analysis and Performance of an Efficient Iterative Detection Strategy for IDMA Systems -- Joint Navigation & Communication based on Interleave-Division Multiple Access -- Out-Of-Band Radiation in Multicarrier Systems: A Comparison -- Mitigation of Dynamically Changing NBI in OFDM Based Overlay Systems -- Cancellation of Digital Narrowband Interference for Multi-Carrier Systems -- RAKE Reception for Signature-Interleaved DS CDMA in Rayleigh Multipath Channel -- Accurate BER of MC-DS-CDMA over Rayleigh fading channels -- OFDM/OQAM for Spread-Spectrum Transmission -- A Multi-Carrier Downlink Transmitter for Leo Satellite -- A New Dynamic Partial Precoding Technique for Mc-Cdma Systems Employing Psk Modulation -- The Influence of Link Adaptation in Multi-User OFDM -- Adaptive Multi-Carrier Spread-Spectrum with Dynamic Time-Frequency Codes for UWB Applications -- Radio Resource Allocation in Mc-Cdma Under QOS Requirements -- Performance of Cyclic Delay Diversity in Ricean Channels -- Downlink Performance of MC-CDMA Systems with Spatial Phase Codes in Fading Channels -- Doppler-Compensation for OFDM-Transmission by Sectorized Antenna Reception -- On the Receive Signal Dynamics in Energy Efficient MIMO OFDM Multi-User Mobile Radio Downlinks -- DOA Estimation for MC-CDMA Uplink Transmissions -- The Cellular Alamouti Technique -- Iterative Intercell Interference Cancellation for DL MC-CDMA Systems -- Positioning with Generalized Multi-Carrier Communications Signals -- Joint Channel Tracking and Phase Noise Compensation for OFDM in Fast Fading Multipath Channels -- Estimation of Sampling Time Misalignments in Ifdma Uplink -- Combined time and frequency domain OFDM channel estimation -- Design and Performance Analysis of Low-Complexity Pilot-Aided OFDM Channel Estimators -- A Study on Channel Estimation for OFDM Systems using EM Algorithm based on Multi-Path Doppler Channel Model -- Channel Estimation for Block-IFDMA -- Robust time domain channel estimation for MIMO-OFDMA Downlink System -- Joint Iterative Channel Estimation and Soft-Chip Combining for a Mimo MC-CDMA Antijam System -- Pilot Design for MIMO-OFDM with Beamforming -- Channel estimation by exploiting sublayer information in OFDM systems -- Joint Data Detection and Channel Estimation for Uplink MC-CDMA Systems over Frequency Selective Channels -- On the Performance of MC-CDMA Systems with Partial Equalization in the Presence of Channel Estimation Errors -- Cross-Coupled Rao-Blackwellized Particle and Kalman Filters for the Joint Symbol-Channel Estimation in MC-DS-CDMA Systems -- Kalman Vs H? Algorithms for MC-DS-CDMA Channel Estimation with or without a Priori ar Modeling.

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 capabilities, 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 Multi-Carrier Spread Spectrum 2007 is to edit the ensemble of the newest contributions and research results in this new field that have been presented during the 6th International Workshop on Multi-Carrier Spread Spectrum (MC-SS 2007), held in Herrsching, Germany.