Analysis of CDMA systems with variable spreading factors

We present an analytical model that extends previous analyses of CDMA systems in practical multipath environments where users can operate at different bit rates. This scenario is of interest for the Wideband CDMA strategy employed in UMTS, and the model permits to compare performances of classic and more innovative spreading signals.

[2]  Kai-Yeung Siu,et al.  Error-rate analysis for multirate DS-CDMA transmission schemes , 2003, IEEE Trans. Commun..

[3]  Roberto Garello,et al.  Performance of DCSK in Multipath Environments: A Comparison with Systems Using Gold Sequences , 2002, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

[4]  E. A. Geraniotis,et al.  Error Probability for Direct-Sequence Spread-Spectrum Multiple-Access Communications - Part II: Approximations , 1982, IEEE Transactions on Communications.

[5]  Tjeng Thiang Tjhung,et al.  BER performance comparison of single code and multicode DS/CDMA channelization schemes for high rate data transmission , 2001, IEEE Communications Letters.

[6]  Arne Svensson,et al.  Multi-Rate Performance in DS/CDMA Systems , 1995 .

[7]  Gianluca Mazzini,et al.  On the ultimate limits of chaos-based asynchronous DS-CDMA-I: basic definitions and results , 2004, IEEE Transactions on Circuits and Systems I: Regular Papers.

[8]  Gianluca Mazzini,et al.  Performance of chaos-based asynchronous DS-CDMA with different pulse shapes , 2004, IEEE Communications Letters.

[9]  Max Nilsson.  Efficient ASIC implementation of a WCDMA Rake Receiver , 2002 .

[10]  Michael W. Hoffman,et al.  Robust chaotic PN sequence generation techniques , 2001, ISCAS 2001. The 2001 IEEE International Symposium on Circuits and Systems (Cat. No.01CH37196).

[11]  J.E. Mazo,et al.  Digital communications , 1985, Proceedings of the IEEE.

[12]  Dan Keun Sung,et al.  Capacities of single-code and multicode DS-CDMA systems accommodating multiclass services , 1999 .