Realization ofUNB System Based on FIR Filter

Author

Bin, Li ; Weixia, Zou ; Zheng, Zhou ; Qijun, Song

Author_Institution

MOE Wireless Network Lab., Key Lab. of Universal Wireless Commun., Beijing

fYear

2008

Firstpage

190

Lastpage

195

Abstract

Ultra-narrow-band communications system can greatly improve the spectrum utilization efficiency, therefore it will ease the tension of spectrum. Unfortunately, arguments from academia still focus on its principle as well as the realization. UNB transmission system based on the FIR filter has been explored in this paper. The characteristic of UNB signal after the FIR filter was analyzed. Then information recovery has been performed using maximum likelihood receiver. The rationality of using the energy of continuous spectral side-lobe has also been discussed. As simulation has showed, if the bandwidth of RF filter is equal to the signal´s NYQUIST´S bandwidth, the BER performance of UNB transmission system is only 1dB poorer than BPSK when BER dropped to 10-5, while the spectrum utilization efficiency can exceed 100bits/s/Hz.

Keywords

FIR filters; radio receivers; radiofrequency filters; BPSK; FIR filter; Nyquist´s bandwidth; RF filter; UNB system; continuous spectral side lobe; maximum likelihood receiver; spectrum utilization efficiency; ultranarrowband communications system; Bandwidth; Baseband; Bit error rate; Delay; Finite impulse response filter; Modulation coding; RF signals; Radio frequency; Signal analysis; Wireless communication; FIR; ML demodulation; NYQUIST´S bandwidth; UNB; asymmetric; high spectrum utilization efficiency;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Information Technologies, 2008. ISCIT 2008. International Symposium on

Conference_Location

Lao

Print_ISBN

978-1-4244-2335-4

Electronic_ISBN

978-1-4244-2336-1

Type

conf

DOI

10.1109/ISCIT.2008.4700180

Filename

4700180