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- W3168052162 abstract "In this paper we summarize the effects of modulation and channel coding on the design of wide angle scan, broadband, phased army antennas. In the paper we perform several trade studies. First, we investigate the amplifier back-off requirement as a function of variability of modulation envelope. Specifically, we contrast constant and non-constant envelope modulations, as well as single and multiple carrier schemes. Additionally, we address the issues an(f concerns of using pulse shaping filters with the above modulation types. Second, we quantify the effects of beam steering on the quality of data, recovery using selected modulation techniques. In particular, we show that the frequency response of the array introduces intersymbol interference for broadband signals and that the mode of operation for the beam steering controller may introduce additional burst or random errors. Finally, we show that the encoder/modulator design must be performed in conjunction with the phased array antenna design." @default.
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- W3168052162 date "1997-10-03" @default.
- W3168052162 modified "2023-09-23" @default.
- W3168052162 title "The Implications of Encoder/Modulator/ Phased Array Designs for Future Broadband LEO Communications" @default.
- W3168052162 hasPublicationYear "1997" @default.
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