Influence of nonlinear HPA on trellis-Coded OFDM for terrestrial broadcasting of digital HDTV

Author

Bogenfeld, E. ; Valentin, R. ; Metzer, K. ; Sauer-Greff, W.

Author_Institution

Res. and Technol. Centre, Telekom, Darmstadt, Germany

fYear

1993

fDate

29 Nov-2 Dec 1993

Firstpage

1433

Abstract

The paper investigates a system proposal for transmitting digital high-definition television (HDTV) signals over terrestrial UHF channels. The authors compare uncoded 16-QAM and trellis-coded 32-CROSS modulation in conjunction with an orthogonal frequency division multiplexing (OFDM) procedure. The simulations show the influence of the nonlinear distortions introduced by the high-power amplifier (HPA) of the transmitter. As HPA the authors consider a travelling wave tube amplifier (TWTA) and a solid state power amplifier (SSPA). The characteristics of the channel for HDTV in a single frequency network (SFN) is simulated using a time-invariant multipath model

Keywords

amplitude modulation; digital communication systems; frequency division multiplexing; high definition television; intersymbol interference; power amplifiers; radio transmitters; radiofrequency interference; telecommunication channels; television broadcasting; television transmitters; travelling-wave-tubes; trellis codes; ultra-high-frequency amplifiers; video signals; SSPA; TWTA; digital HDTV; high-definition television signals; high-power amplifier; nonlinear HPA; nonlinear distortions; orthogonal frequency division multiplexing; single frequency network; solid state power amplifier; terrestrial UHF channels; terrestrial broadcasting; time-invariant multipath model; transmitter; travelling wave tube amplifier; trellis-coded 32-CROSS modulation; trellis-coded OFDM; uncoded 16-QAM; AWGN; Baseband; Decoding; HDTV; Image coding; Nonlinear distortion; OFDM modulation; Power amplifiers; Radio broadcasting; TV broadcasting;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1993, including a Communications Theory Mini-Conference. Technical Program Conference Record, IEEE in Houston. GLOBECOM '93., IEEE

Conference_Location

Houston, TX

Print_ISBN

0-7803-0917-0

Type

conf

DOI

10.1109/GLOCOM.1993.318310

Filename

318310