DocumentCode :
1105942
Title :
Using frequency hopping spread spectrum technique to combat multipath interference in a multiaccessing environment
Author :
Tsai, Ywh-Ren ; Chang, Jin-Fu
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Volume :
43
Issue :
2
fYear :
1994
fDate :
5/1/1994 12:00:00 AM
Firstpage :
211
Lastpage :
222
Abstract :
The purpose of this paper is to conduct performance analysis for a frequency-hopped spread spectrum multiaccess network which is subject to the threat of multipath interference. Baseband modulation is done through frequency shift keying and signal detection is accomplished by a noncoherent type receiver. The quality of a signal is affected by the channel noise, multiuser interference, and multipath interference. Performance analysis is conducted on the basis of bit error rate. Due to the sophistication of the system exact analysis is not feasible. The accuracy of approximation is checked against simulations. One major discovery Is that when signal-to-noise ratio is low, multipath interference on the contrary may help to enhance the quality of the signal. Another discovery is that when signal-to-noise ratio is high enough, multipath/multiuser interference becomes the bottleneck of performance. The effect of channel noise can be eliminated by maintaining a large signal-to-noise ratio while spread spectrum technique is employed to reduce the effect of multipath/multiuser interference
Keywords :
error statistics; fading; frequency agility; frequency shift keying; multi-access systems; probability; radiofrequency interference; signal detection; spread spectrum communication; SNR; approximation; baseband modulation; bit error rate; channel noise; erroneous detection probability; frequency hopping spread spectrum; frequency shift keying; multiaccess network; multiaccessing environment; multipath interference; multiuser interference; noncoherent receiver; performance analysis; signal detection; signal-to-noise ratio; simulations; Baseband; Bit error rate; Frequency division multiaccess; Frequency shift keying; Interference; Noise reduction; Performance analysis; Signal detection; Signal to noise ratio; Spread spectrum communication;
fLanguage :
English
Journal_Title :
Vehicular Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9545
Type :
jour
DOI :
10.1109/25.293639
Filename :
293639
Link To Document :
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