Equalization for infrared wireless systems using OOK-CDMA

Author

Yamaguchi, Hiroe ; Matsuo, Ryoko ; Ohtsuki, Tomoaki ; Sasase, Iwao

Author_Institution

Dept. of Inf. & Comput. Sci., Keio Univ., Yokohama, Japan

Volume

1

fYear

2001

fDate

11-14 Jun 2001

Firstpage

170

Abstract

We evaluate the performance of indoor infrared wireless systems using on-off keying code-division multiple-access (OOK-CDMA) systems with three kinds of equalizers: decision-feedback equalizer (DFE), decision-feedforward-and-feedback equalizer (DFFE), and feedforward equalizer (FE). To estimate the impulse response, we use the training sequence that alternates `1´ and `0´ sequentially. Among three kinds of equalizers, we show that the system with the DFFE can achieve the best performance at high bit rate. When the bit rate is low or the transmitted optical power is low, the system with the FE achieves the best performance

Keywords

amplitude shift keying; code division multiple access; decision feedback equalisers; optical communication; optical modulation; transient response; DFE; DFFE; FE; OOK-CDMA; bit rate; decision-feedback equalizer; decision-feedforward-and-feedback equalizer; feedforward equalizer; impulse response; indoor infrared wireless systems performance; on-off keying code-division multiple-access; training sequence; transmitted optical power; Bit error rate; Bit rate; Decision feedback equalizers; Iron; Multiaccess communication; Optical fiber communication; Optical receivers; Optical transmitters; Performance analysis; Power system modeling;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2001. ICC 2001. IEEE International Conference on

Conference_Location

Helsinki

Print_ISBN

0-7803-7097-1

Type

conf

DOI

10.1109/ICC.2001.936297

Filename

936297