Fading Basics: Narrow Band, Wide Band, and Spatial Channels
Radio technologies have undergone increasingly rapid evolutionary changes in the recent past. The first cellular phones used narrow-band FM modulation, which was soon replaced by digital modulation in second & third generation devices. Today, multiple-antenna systems are being employed to increase data rates. These provide improved quality while decreasing operational costs.
This white paper guides a reader through the basic concepts of fading and into some critical RF-related topics such as:
Multi-path Delays and Delay Spread
Wide band Channels
Channel Modeling and MIMO Capacity
There are two more White Papers in this series available for download: