Linearization of multi-carrier power amplifiers

Johansson, Mikael; Mattsson, Thomas R.; Sundstrom, L.; Faulkner, M.

doi:10.1109/vetec.1993.508784

Cited by 11 publications

(2 citation statements)

References 4 publications

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“…In the traditional multichannel configuration, shown in Fig. 1(a) [1], the individual channels are applied to individual narrow-band power amplifiers and then the outputs of each are combined to obtain a multichannel high-power signal. Generally, zonal filters are used with each narrow-band power amplifier prior to power combining to eliminate out-of-band distortion and, in particular, to eliminate the presentation of undesired signals to the output nonlinearity of the amplifiers.…”

Section: Introductionmentioning

confidence: 99%

Characterization of cross modulation in multichannel amplifiers using a statistically based behavioral modeling technique

Gharaibeh

Steer

2003

IEEE Trans. Microwave Theory Techn.

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A statistically based modeling technique is developed for characterizing in-band and out-of-band intermodulation and cross-modulation distortions in multichannel amplifier environments. The model is based on a new multiple envelope memoryless behavioral model that captures the black-box characteristics of multichannel amplifiers. A power amplifier with a two code-division multiple-access channel signal is characterized experimentally and verifies the approach.

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Section: Introductionmentioning

confidence: 99%

Characterization of cross modulation in multichannel amplifiers using a statistically based behavioral modeling technique

Gharaibeh

Steer

2003

IEEE Trans. Microwave Theory Techn.

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“…Orthogonal Frequency Division Multiplexing (OFDM) systems are currently being proposed and tested for many applications, including High De nition Tele-Vision (HDTV) 2, 3], cellular mobile telephony 4], and Digital Audio Broadcasting (DAB) 5]. One of the drawbacks of OFDM systems is however the large peak to average power ratio (PAPR) that causes problems since linear ampli ers need to be used to avoid cross talk interference between sub-channels 6,7]. Di erent methods of reducing the PAPR for OFDM systems are proposed.…”

Section: Introductionmentioning

confidence: 99%

Parallel combinatory OFDM signaling

Frenger

Svensson

1999

IEEE Trans. Commun.

102

105

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In this paper, A Parallel Combinatory-Orthogonal Frequency Division Multiplexing (PC-OFDM) system is proposed and analyzed. The proposed system selects at each symbol interval a subset of the available sub-carriers, and the selected sub-carriers are modulated by points from an M-PSK signal constellation. PC-OFDM systems can be designed to have lower Peak to Average Power Ratio (PAPR), higher bandwidth e ciency, and lower bit error probability on Gaussian channels compared to ordinary OFDM systems. A bit mapping procedure using the Johnson association together with a position algorithm for the PSK symbols is proposed. Good analytical approximations of the BER for PC-OFDM systems are derived for AWGN and Ricean fading channels, and extensive simulation results are presented.

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2. Power Amplifier Linearization

Digital Synthesizers and Transmitters for Software Radio

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Linearization of multi-carrier power amplifiers

Cited by 11 publications

References 4 publications

Characterization of cross modulation in multichannel amplifiers using a statistically based behavioral modeling technique

Characterization of cross modulation in multichannel amplifiers using a statistically based behavioral modeling technique

Parallel combinatory OFDM signaling

2. Power Amplifier Linearization

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