Conditions and performance of Ideal RAKE reception for Ultra-Wideband signals in Lognormal fading channels
Date
2004
Authors
Zhang, Jian (Andrew)
Kennedy, Rodney
Abhayapala, Thushara
Journal Title
Journal ISSN
Volume Title
Publisher
Kluwer Academic Publishers
Abstract
In this paper, the conditions and performance of ideal RAKE reception for time hopping Ultra-Wideband (UWB) investigated. Owing to the complex propagation phenomena and specific-structure of UWB signals, new problems relevant to the operation of RAKE receivers arise. This motivates us to reconsider the conditions under which a RAKE receiver can work effectively with negligible interference between fingers. Key findings are that the conditions not only relate to the property of time hopping codes, but also modulation methods. An analytical technique is introduced to derive explicit expressions of RAKE performance for various combining methods for a lognormal fading channel. Numerical results show that RAKE reception can largely improve the performance, and equal gain combining has comparable performance to maximum ratio combining.
Description
Keywords
Keywords: Lognormal distribution; Lognormal fading channels; RAKE receivers; Ultra-wideband (UWB); Communication channels (information theory); Computer simulation; Error analysis; Gaussian noise (electronic); Mathematical models; Probability density function; Sign Lognormal distribution; RAKE receiver; Ultra-wideband
Citation
Collections
Source
International Journal of Wireless Information Networks
Type
Journal article
Book Title
Entity type
Access Statement
License Rights
Restricted until
2037-12-31
Downloads
File
Description