Multitone Jamming Rejection of Differential Frequency Hopping System with Product-Combining Receiver Over Rayleigh-fading Channel

2006 ◽  
Author(s):  
Zhi Chen ◽  
Shaoqian Li ◽  
Binhong Dong
Keyword(s):  
Fading Channel ◽  
Rayleigh Fading ◽  
Frequency Hopping ◽  
Rayleigh Fading Channel

scholarly journals Hybrid DS/FH two-level code acquisition of frequency hopping radio in Rayleigh fading channel

2012 ◽  
Vol 25 (3) ◽  
pp. 225-233
Author(s):  
Branislav Todorovic ◽  
Nemanja Mitrovic
Keyword(s):  
Performance Measures ◽  
Fading Channel ◽  
Rayleigh Fading ◽  
Frequency Hopping ◽  
Rayleigh Fading Channel ◽  
Direct Sequence ◽  
Acquisition Performance ◽  
Code Synchronization ◽  
Code Acquisition ◽  
Pn Code Acquisition

A method for very long pseudonoise (PN) code acquisition of frequency hopping (FH) radio is presented and analyzed. This method is realized through twolevels: (1) acquisition of preamble, which consists of several short PN codes (sync prefixes) modulated by using direct sequence (DS) technique, and (2) long PN code synchronization of FH signal checking out. This scheme at the receiving side uses a set of passive correlators and a bank of active correlators. Some numerical results of acquisition performance measures in Rayleigh fading channel are presented.

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