Fading-resistant and MUI-free codes for CDMA systems
- 1 January 1999
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
A new class of codes was proposed recently for perfect multi-user interference (MUI) suppression in code division multiple access (CDMA) systems. These so called Lagrange-Vandermonde (LV) codes offer deterministic MUI elimination without channel estimation, and convert frequency selective channels into flat fading channels. In this work, we develop dual CDMA transceivers, naturally termed Vandermonde Lagrange (VL), with the precoder-decoder roles interchanged, in order to improve the system flexibility in the code assignment. We also derive and test nonredundant and redundant techniques for combating the residual flat fading.Keywords
This publication has 4 references indexed in Scilit:
- FRAMES multiple access for UMTS and IMT-2000IEEE Wireless Communications, 1998
- Inverse filtering criteria for CDMA systemsIEEE Transactions on Signal Processing, 1997
- MMSE interference suppression for direct-sequence spread-spectrum CDMAIEEE Transactions on Communications, 1994
- Near-far resistance of multiuser detectors in asynchronous channelsIEEE Transactions on Communications, 1990