Published Papers - MIYAMOTO Shinichi

Characteristics of Electromagnetic Disturbance from Microwave Ovens and the Interference with Digital Radio Communication Systems

Takashi Shinozuka, Yukio Yamanaka, Shinichi Miyamoto, Norihiko Morinaga

1995 International Symposium on Communications (ISCOM'95)   2   769 - 776   1995.12  [Refereed]

PERFORMANCE ANALYSIS OF QAM SYSTEMS UNDER CLASS-A IMPULSIVE NOISE ENVIRONMENT

S MIYAMOTO, M KATAYAMA, N MORINAGA

IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY ( IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC )  37 ( 2 ) 260 - 267   1995.05  [Refereed]

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This paper describes the performance of QAM (Quadrature Amplitude Modulation) systems under impulsive noise environment. In the analysis, we employ, as a model of the impulsive noise, Middleton's model labeled class A. First, the statistical characteristics of the in-phase and quadrature components of the impulsive noise are investigated, and it is proved that, in contrast to Gaussian noise, these components are dependent especially for the impulsive noise with small impulsive indices. Nest, with consideration of the dependence between the in-phase and quadrature components of the noise, the performance of QAM systems with the conventional receiver designed for Gaussian noise is analyzed, The numerical results show that the performance is much worse than that achieved under Gaussian noise, Moreover, we show the design of the maximum Likelihood receiver for class A impulsive noise and the great performance improvement by this receiver is confirmed.

DOI

DESIGN OF TCM SIGNALS FOR CLASS-A IMPULSIVE NOISE ENVIRONMENT

S MIYAMOTO, M KATAYAMA, N MORINAGA

IEICE TRANSACTIONS ON COMMUNICATIONS ( IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG )  E78B ( 2 ) 253 - 259   1995.02

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In this paper, a design of TCM signals for Middleton's class-A impulsive noise environment is investigated. The error event characteristics under the impulsive noise is investigated, and it is shown that the length of the signal sequence is more important than Euclidean distance between the signal sequences. Following this fact, we introduce the shortest error event path length as a measure of the signal design. In order to make this value large, increasing of states of convolutional codes is employed, and the performance improvement achieved by this method is evaluated. Numerical results show the great improvement of the error performance and conclude that the shortest error event path length is a good measure in the design of TCM signals under impulsive noise environment. Moreover, the capacity of class-A impulsive noise channel is evaluated, and the required signal sets expansion rates to obtain the achievable coding gain is discussed.

Design of TCM Signals for Class-A Impulsiev Noise Environment

Shinichi Miyamoto, Norihiko Morinaga （Part： Lead author )

Proceedings of the 11th International Zurich Symposium and Technical Exhibition on Electromagnetic Compatibility     143 - 148   1995

Electromagnetic Disturbance above 1GHz and its effect to the Performanceof Digital Radio Communications Systems

  Vol.8, No.92, pp.50-60   1995

Performance of CDMA System under Class-A Impulsive Noise Environment

Proceeding of 2nd Asia-Pacific Conference on Communications     331 - 335   1995

Receiver design using the dependence between quadrature components of impulsive radio noise

S MIYAMOTO, M KATAYAMA, N MORINAGA

ICC '95 - 1995 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, CONFERENCE RECORD, VOLS 1-3 ( I E E E )  ( 3 ) 1784 - 1789   1995

A Design of BPSK Receiver Using the Dependence between Quadrature Components of Class-A Impulsive Noise

Proceedings of the 1994 International Symposium on Electromagnetic Compatibility     513 - 516   1994

OPTIMUM DETECTION AND DESIGN OF TCM SIGNALS UNDER IMPULSIVE NOISE ENVIRONMENT

S MIYAMOTO, M KATAYAMA, N MORINAGA

IEEE INTERNATIONAL CONFERENCE ON SYSTEMS ENGINEERING ( I E E E )  473-478   473 - 478   1992