Abstract
The Constant Modulus Algorithm (CMA) has been proved to be very effective to equalize non-minimum-phase channels blindly. However, CMA suffers from a residual intersymbol interference (ISI) and slow convergence when applied to high order non-constant modulus (e.g. QAM) constellations and the equalizer is an FIR filter. In this paper we propose a method able to provide lower ISI and faster convergence rate than CMA, based on cost functions specifically matched to the signal constellation. Differently from CMA methods, where the matching between a certain number of cumulants between the equalizer output and the signal constellation is the driving criterion, the cost function used in this paper tries to force the equalizer output to belong to the signal constellation. The superiority of the proposed approach with respect to conventional approaches is verified by simulation.
| Original language | English (US) |
|---|---|
| Title of host publication | Conference Record of the Asilomar Conference on Signals, Systems and Computers |
| Editors | M.P. Farques, R.D. Hippenstiel |
| Publisher | IEEE Comp Soc |
| Pages | 550-554 |
| Number of pages | 5 |
| Volume | 1 |
| State | Published - 1998 |
| Externally published | Yes |
| Event | Proceedings of the 1997 31st Asilomar Conference on Signals, Systems & Computers. Part 1 (of 2) - Pacific Grove, CA, USA Duration: Nov 2 1997 → Nov 5 1997 |
Other
| Other | Proceedings of the 1997 31st Asilomar Conference on Signals, Systems & Computers. Part 1 (of 2) |
|---|---|
| City | Pacific Grove, CA, USA |
| Period | 11/2/97 → 11/5/97 |
ASJC Scopus subject areas
- Hardware and Architecture
- Signal Processing
- Electrical and Electronic Engineering