Dirk Nikolai (Former Ph. D. Student)

Research

• Optimization of a new CDMA concept using a hybrid modulation scheme
• Optimization of incoherent RAKE receivers for CDMA transmission in cellular networks

Publications

1999

• Optimierung höherstufiger Codemultiplex-Systeme zur Mobilfunkübertragung BibT_EX
  D. Nikolai
  Ph.D. Thesis, University of Bremen, Germany,
  Shaker Verlag, Aachen, Germany, March 1999, ISBN 978-3-8265-4813-0

1998

• On the Optimisation of a Noncoherent CDMA System Based on M-ary Orthogonal Modulation BibT_EX
  M. Benthin, K.-D. Kammeyer, R. Mann Pelz, D. Nikolai
  European Transactions on Telecommunications (ETT 98), Vol. 9, No. 6, pp. 497-506, November 1998
• On the Bit Error Behaviour of Coded DS-CDMA with Various Modulation Techniques BibT_EX
  D. Nikolai, A. Dekorsy, K.-D. Kammeyer
  IEEE 9th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 98), Boston, USA, 8. - 11. September 1998
• Eignung von OFDM und/oder CDMA für die mobile Datenübertragung in zellularen Netzen BibT_EX
  A. Dekorsy, K. Matheus, D. Nikolai, H. Schmidt
  Arbeitsbereich Nachrichtentechnik der Universität Bremen, Bremen, Germany, 1. March 1998

1997

• BER Analysis of a Novel Hybrid Modulation Scheme for Noncoherent DS-CDMA Systems BibT_EX
  D. Nikolai, K.-D. Kammeyer
  IEEE 8th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 97), Vol. 2, pp. 256-260, Helsinki, Finland, 1. - 4. September 1997

1996

• A New CDMA-Concept using Hybrid Modulation with Noncoherent Detection BibT_EX
  K.-D. Kammeyer, D. Nikolai
  IEEE Fourth Symposium on Communications and Vehicular Technology in the Benelux (SCVT 96), pp. 102-107, University of Gent, Belgium, 1. October 1996
• Noncoherent RAKE-Receiver with Optimum Weighted Combining and Improved Closed-Loop Power Control BibT_EX
  D. Nikolai, K.-D. Kammeyer
  IEEE Fourth International Symposium on Spread Spectrum Techniques and Applications (ISSSTA 96), Vol. 1, pp. 239-243, Mainz, Germany, 22. - 25. September 1996