The search functionality is under construction.

The search functionality is under construction.

A computational cost reduction scheme for a post-distortion type nonlinear distortion compensator of OFDM signals is proposed, and compared with the conventional sub-optimum detection scheme. The proposed scheme utilizes the principle that a complex OFDM signal can be demodulated with not only both I-phase (real part) and Q-phase (imaginary part) components, but also either of them. Usually each phase of an OFDM signal exhibits different signal envelope and they are distorted differently by the nonlinearity of a power amplifier. Consequently, three output sequence patterns can be obtained at the receiver. By comparing these outputs, we can know the erroneous positions of these sequences to some extent. By the aid of this comparison, we need to evaluate only a limited number of replicas for the compensation process of the post-distortion type nonlinear distortion compensator, which results in the computational cost reduction. We have proposed four new compensation schemes based on this idea and derived their performance in terms of the bit error rate and the average number of calculations.

- Publication
- IEICE TRANSACTIONS on Communications Vol.E81-B No.12 pp.2334-2342

- Publication Date
- 1998/12/25

- Publicized

- Online ISSN

- DOI

- Type of Manuscript
- Special Section PAPER (Special Issue on the Latest Development of Telecommunication Research)

- Category
- Wireless Communication Systems

The copyright of the original papers published on this site belongs to IEICE. Unauthorized use of the original or translated papers is prohibited. See IEICE Provisions on Copyright for details.

Copy

Hiroyuki ATARASHI, Masao NAKAGAWA, "A Computational Cost Reduction Scheme for a Post-Distortion Type Nonlinear Distortion Compensator of OFDM Signals" in IEICE TRANSACTIONS on Communications,
vol. E81-B, no. 12, pp. 2334-2342, December 1998, doi: .

Abstract: A computational cost reduction scheme for a post-distortion type nonlinear distortion compensator of OFDM signals is proposed, and compared with the conventional sub-optimum detection scheme. The proposed scheme utilizes the principle that a complex OFDM signal can be demodulated with not only both I-phase (real part) and Q-phase (imaginary part) components, but also either of them. Usually each phase of an OFDM signal exhibits different signal envelope and they are distorted differently by the nonlinearity of a power amplifier. Consequently, three output sequence patterns can be obtained at the receiver. By comparing these outputs, we can know the erroneous positions of these sequences to some extent. By the aid of this comparison, we need to evaluate only a limited number of replicas for the compensation process of the post-distortion type nonlinear distortion compensator, which results in the computational cost reduction. We have proposed four new compensation schemes based on this idea and derived their performance in terms of the bit error rate and the average number of calculations.

URL: https://global.ieice.org/en_transactions/communications/10.1587/e81-b_12_2334/_p

Copy

@ARTICLE{e81-b_12_2334,

author={Hiroyuki ATARASHI, Masao NAKAGAWA, },

journal={IEICE TRANSACTIONS on Communications},

title={A Computational Cost Reduction Scheme for a Post-Distortion Type Nonlinear Distortion Compensator of OFDM Signals},

year={1998},

volume={E81-B},

number={12},

pages={2334-2342},

abstract={A computational cost reduction scheme for a post-distortion type nonlinear distortion compensator of OFDM signals is proposed, and compared with the conventional sub-optimum detection scheme. The proposed scheme utilizes the principle that a complex OFDM signal can be demodulated with not only both I-phase (real part) and Q-phase (imaginary part) components, but also either of them. Usually each phase of an OFDM signal exhibits different signal envelope and they are distorted differently by the nonlinearity of a power amplifier. Consequently, three output sequence patterns can be obtained at the receiver. By comparing these outputs, we can know the erroneous positions of these sequences to some extent. By the aid of this comparison, we need to evaluate only a limited number of replicas for the compensation process of the post-distortion type nonlinear distortion compensator, which results in the computational cost reduction. We have proposed four new compensation schemes based on this idea and derived their performance in terms of the bit error rate and the average number of calculations.},

keywords={},

doi={},

ISSN={},

month={December},}

Copy

TY - JOUR

TI - A Computational Cost Reduction Scheme for a Post-Distortion Type Nonlinear Distortion Compensator of OFDM Signals

T2 - IEICE TRANSACTIONS on Communications

SP - 2334

EP - 2342

AU - Hiroyuki ATARASHI

AU - Masao NAKAGAWA

PY - 1998

DO -

JO - IEICE TRANSACTIONS on Communications

SN -

VL - E81-B

IS - 12

JA - IEICE TRANSACTIONS on Communications

Y1 - December 1998

AB - A computational cost reduction scheme for a post-distortion type nonlinear distortion compensator of OFDM signals is proposed, and compared with the conventional sub-optimum detection scheme. The proposed scheme utilizes the principle that a complex OFDM signal can be demodulated with not only both I-phase (real part) and Q-phase (imaginary part) components, but also either of them. Usually each phase of an OFDM signal exhibits different signal envelope and they are distorted differently by the nonlinearity of a power amplifier. Consequently, three output sequence patterns can be obtained at the receiver. By comparing these outputs, we can know the erroneous positions of these sequences to some extent. By the aid of this comparison, we need to evaluate only a limited number of replicas for the compensation process of the post-distortion type nonlinear distortion compensator, which results in the computational cost reduction. We have proposed four new compensation schemes based on this idea and derived their performance in terms of the bit error rate and the average number of calculations.

ER -