Quasiconstant envelope phase-shift keying (PSK) is analyzed to assess its ability to overcome nonlinearities caused by fully saturated RF power amplifiers in communications systems. These modulations can achieve bit error rate (BER) performance comparable to linear BPSK in additive white Gaussian noise (AWGN) channel. Quasiconstant envelope offset quadrature PSK (OQPSK) is presented as a design example. At a BER = 10/sup -5/, the SNR degradation caused by fully saturated power amplifiers is 0.1 dB. The simulated BER matches analytically derived results. For a communications system employing the quasiconstant envelope OQPSK and a rate 1/2 convolutional code with K = 7, the demodulation performance is degraded by 0.25 dB at a BER = 10/sup -5/ when a fully saturated power amplifier is employed.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    PSK communications systems using fully saturated power amplifiers


    Contributors:
    Jia Li, (author) / Qingchong Liu, (author)


    Publication date :

    2006-04-01


    Size :

    3699016 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English






    Solid-state power amplifiers in communications satellites

    HO, P. / RUBIN, M. / WHERRY, J. | AIAA | 1978


    Undersea Lightwave Communications Systems Using Erbium-Doped Fiber Amplifiers

    IEEE; Lasers and Electro-Optics Society | British Library Conference Proceedings | 1993