Multi-Carrier Spread-Spectrum & Related Topics: Third International Workshop, September 26–28, 2001, Oberpfafenhofen, GermanyKhaled Fazel, S. Kaiser Stefan Kaiser Khaled Fazel Radio System Design German Aerospace Center (DLR) Marconi Communications lnstitute of Communications and Navigation D-71522 Backnang, Germany D-82234 Wessling, Germany We are currently observing that frequency spectrum is a limited and valuable resource for wireless mobile communications. A good example can be observed among European network operators for the prices to pay for frequency bands for UMTS/IMT2000. Keeping this in mind, the fIrst goal when designing future wireless communication systems has to be the increase in spectral effIciency by allowing higher flexibility for the system design and deployment. The development in digital communications in the past years has enabled effIcient modulation and coding techniques for robust and spectral effIcient data, speech, audio and video transmission. Here, we should mention two interesting and successful techniques. These are the multi-carrier modulation (e. g. OFDM) and the spread spectrum technique (e. g. DS-CDMA). During the last decade of this millennium the technique of multi-carrier transmission for wireless broadband multimedia applications has received wide interest. Its fIrst great success was in 1990 as it was selected for the European Digital Audio Broadcasting (DAB) standard. Its further prominent success was in 1995 and 1998 as it was selected as modulation scheme for the European Digital Video Broadcasting (DVB-T) standard and in three broadband wireless indoor standards, namely European ETSI-HIPERLAN/2, American IEEE-802. 11a and Japanese MMAC, respectively. |
Contents
3 | |
Time Division DuplexCDMA | 13 |
Nakagawa R Esmailzadeh | 20 |
Does OFDM Really Prefer Frequency Selective Fading Channels? | 35 |
An Adaptive Orthogonal Multicarrier Multiuser CDMA Technique for | 45 |
Performance of Low Complex Antenna Diversity Techniques for Mobile | 53 |
Common Architectures for TDCDMA and OFDM Based Mobile Radio | 65 |
MultiCarrier CDMA for Air Traffic Control AirGround Communication | 77 |
DETECTION MULTIPLEXING INTERFERENCE CANCELLATION | 165 |
F Bader S Zazo J M Borrallo | 180 |
RateAdaptive Coded Multiuser OFDM for Downlink Wireless Systems | 199 |
Optimization of Capacity Assignement in MCCDMA Transmission Systems | 217 |
Capacity Enhancement of DSCDMA Downlink Through Multicarrier with | 233 |
Downlink Performance of Randomized OFDM Access | 249 |
Investigation on Using Channel Information of MCCDMA for PreRake | 265 |
SYNCHRONIZATION AND CHANNNEL ESTIMATION | 282 |
Development and Implementation of an Advanced Airport Data Link Based | 85 |
Potential and Benefits of the Spatial Dimension in Case of MCCDMA | 99 |
Variable Spreading Factor Orthogonal Frequency and Code Division | 112 |
Serial Code Concatenation with Complex Valued WalshHadamard Codes | 131 |
On the Use of DMT and FMT for MCCDMA Systems | 147 |
Joint Directions of Arrival and Delay Channel Characteristics Estimation | 303 |
Comparison of Channel Estimation Techniques for a Single Carrier System | 325 |
Filter Design Methodology Controlling the Impact on Bit Error Rate | 345 |
Joint Technique of PTS and Adaptive Clipping Level Control with Filtering | 361 |
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Common terms and phrases
2002 Kluwer Academic algorithm allocation antenna antenna diversity average AWGN band bandwidth base station BER performance bit error rate block broadband carrier CDMA CDMA systems channel coding channel estimation chip combining complex computational correlation cyclic prefix data rate data symbols decoding delay spread detection detector diversity downlink DS-CDMA DVB-T equalization fading channel Fazel Figure Frequency Division frequency domain guard interval HIPERLAN/2 IEEE IFFT impulse response indoor interference cancellation interleaving Kaiser eds matrix maximum MC-CDMA MC-CDMA system method MMSE Mobile Communications modulation Multi-Carrier Spread-Spectrum multipath multiple access multiuser noise number of users OFCDM OFDM symbols OFDM system OFDMA output parameters path pilot symbols Pre-Rake proposed QPSK Rayleigh fading received signal samples scheme simulation results Spread-Spectrum Spread-Spectrum & Related spreading code spreading sequences SS-OFDM sub-band subcarriers synchronization TD-CDMA technique transmission transmitted uplink vector wireless