Modems White Papers
Implementation of a MIMO OFDM Based Wireless LAN System
Overview The combination of Multiple-Input Multiple-Output (MIMO) signal processing with Orthogonal Frequency Division Multiplexing (OFDM) is regarded as a promising solution for enhancing the data rates of next generation wireless communication systems operating in frequency-selective fading environments. To realize this extension of OFDM with MIMO, a number of changes are required in the baseband signal processing. An overview is given of the necessary changes, including time and frequency synchronization, channel estimation, synchronization tracking and MIMO detection.
| Publisher | Technical University of Eindhoven | File Format | |
|---|---|---|---|
| Date Published | June 2003 | Downloads | 16 |
| Format | White Papers | ||
| Topics | |||
Mutual Interference in OFDM-Based Spectrum Pooling Systems
Public mobile radio spectrum has become a scarce resource while wide spectral ranges are only rarely used. Here, a new strategy called spectrum pooling is considered. It aims at enabling...
Design and Simulation of Orthogonal Frequency Division Multiplexing (OFDM) Signaling
A MATLAB program has been written to investigate Orthogonal Frequency Division Multiplexing (OFDM) communication systems. This program is valuable for future researchers simulating systems that are too theoretically complex to...
V.92 The Next Generation Modem Technology
The paper discusses the features and benefits of V.92. As with any new standard, multi-vendor interoperability is critical to help accelerate deployment of standards-based equipment. LucentÂ’s V.92 solution inter-operates with...
Effect of Rounding and Saturation in Fixed-Point DSP Implementation of IFFT and FFT for OFDM Applications
This paper describes a new technique for designing FFTs for Orthogonal Frequency Division Multiplex (OFDM) transmitters and receivers. Using the new technique, signals within the FFT structure are scaled so...
Optimum Noise Thresholds in Decision Directed Impulse Noise Mitigation for OFDM
Impulse noise is a significant problem in some OFDM applications including digital television broadcasting. This paper studies the optimum threshold values for a novel decision directed impulse noise mitigation algorithm....



