Direct Spectrum Division Transmission for Highly Efficient Frequency Utilization in Satellite Communications

Jun-ichi ABE  Fumihiro YAMASHITA  Katsuya NAKAHIRA  Kiyoshi KOBAYASHI  

IEICE TRANSACTIONS on Communications   Vol.E95-B    No.2    pp.563-571
Publication Date: 2012/02/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E95.B.563
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Satellite Communications
satellite communications,  filter bank,  direct spectrum division transmission,  spectrum editing technique,  

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This paper proposes Direct Spectrum Division Transmission with spectrum editing technique. The transmitter divides the single carrier modulated signal into multiple “sub-spectra” in the frequency domain and arranges each sub-spectrum so as to more fully utilize the unused frequency resources. In the receiver, the divided sub-spectra are combined in the frequency domain and demodulated. By editing the divided spectrum in the frequency domain, the total bandwidth occupied by the multiple “sub-spectra” is less than that of the modulated signal. The proposed technique allows the unused frequency resources scattered across the bands to be better utilized. Simulations show that the proposed technique makes the bit error rate negligible.