Publication

Rotation Invariant Subcarrier Mapping over DVB-T2 Reserved Tones

Stefano Rosati
2013
Conference Papers

Abstract

This paper presents a new approach, named Rotation Invariant Subcarrier Mapping (RISM), to Peak-to-Average-Power-Ratio (PAPR) reduction in OFDM systems. This technique enables data transmission over those subcarrier which are dedicated to the PAPR reduction if a state-of-the-art method, Tone Reservation, is employed. We apply RISM to DVB-T2 systems, showing that the reserved tones foreseen by the standard only for PAPR reduction purposes can effectively carry additional useful information to the receiver, and, at the same time, RISM achieves a PAPR reduction very close to the Tone Reservation. Thus, the proposed technique offers improved spectral efficiency while keeping the robustness against nonlinear distortion effects.

Official source

https://infoscience.epfl.ch/entities/publication/5e2b3aa1-7ac9-4fee-995f-ea1a5f7b2355

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Stefano Rosati
2013
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/5e2b3aa1-7ac9-4fee-995f-ea1a5f7b2355

About this result

Related concepts (9)

Orthogonal frequency-division multiplexing

In telecommunications, orthogonal frequency-division multiplexing (OFDM) is a type of digital transmission used in digital modulation for encoding digital (binary) data on multiple carrier frequencies. OFDM has developed into a popular scheme for wideband digital communication, used in applications such as digital television and audio broadcasting, DSL internet access, wireless networks, power line networks, and 4G/5G mobile communications. OFDM is a frequency-division multiplexing (FDM) scheme that was introduced by Robert W.

Distortion (music)

Distortion and overdrive are forms of audio signal processing used to alter the sound of amplified electric musical instruments, usually by increasing their gain, producing a "fuzzy", "growling", or "gritty" tone. Distortion is most commonly used with the electric guitar, but may also be used with other electric instruments such as electric bass, electric piano, synthesizer and Hammond organ. Guitarists playing electric blues originally obtained an overdriven sound by turning up their vacuum tube-powered guitar amplifiers to high volumes, which caused the signal to distort.

Distortion

In signal processing, distortion is the alteration of the original shape (or other characteristic) of a signal. In communications and electronics it means the alteration of the waveform of an information-bearing signal, such as an audio signal representing sound or a video signal representing images, in an electronic device or communication channel. Distortion is usually unwanted, and so engineers strive to eliminate or minimize it. In some situations, however, distortion may be desirable.

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