Multiple‐input multiple‐output symbol rate signal digital predistorter for non‐linear multi‐carrier satellite channels
نویسندگان
چکیده
منابع مشابه
Nonlinear Equalization of Digital Satellite Channels
Absfracr-Conventional techniques attempting to compensate for the influence of linear and nonlinear distortion in digital satellite channels include optimization of channel filtering. With conventional linear filtering it has been experienced that there is still room for considerable improvement, so that i t appears reasonable to investigate some forms of nonlinear filtering in an attempt to co...
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ACI = Adjacent Channel Interferences APSK = Amplitude Phase Shift Key BER = Bit Error Rate DPD = Digital Predistortion DTH = Direct To Home EQ = EQualization FIR = Finite Impulse Response GW = Gate Way HPA = High Power Amplifier IBO = Input Back-Off IMUX = Input ISI = Inter-Symbol Interference L-TWTA = Linearized Travelling Wave Tube Amplifier LS = Least Squares OBO = Output Back-Off OMUX = Out...
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Two key advances are envisaged for future missions: (a) spectrally efficient transmission to meet the increasing demand and (b) sharing of satellite capacity among different links to meet power/mass requirements. Joint amplification of multiple-carrier DVB-S2 signals using a single High-Power Amplifier (HPA) is a particular application of satellite resource sharing. However, effects specific to...
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Power amplifiers, an integral component to most wireless communication systems, are inherently nonlinear devices that introduce out-of-band spectral regrowth and constellation degradation to the amplifier output. One solution is to operate in a highly backed-off state to achieve quasi-linear performance. Operating in this region requires a higher-saturated power rating for a given output power ...
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This paper proposes a new class of 16-ary Amplitude and Phase Shift Keying (APSK) coded modulations called double-ring APSK modulation. The new modulation is shown to be powerand spectrallyeÆcient, with interesting applications to satellite communications. A preliminary constellation parameter optimization, based on information-theoretic evaluation of the channel capacity bounds has been valida...
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ژورنال
عنوان ژورنال: IET Communications
سال: 2015
ISSN: 1751-8636,1751-8636
DOI: 10.1049/iet-com.2015.0176