Broadband indoor wireless communications in the (20-60)GHz band: Signal strength considerations

Thyagarajan, V.; Hafez, Roshdy H. M.; Falconer, D.D.

doi:10.1109/icupc.1993.528508

Cited by 12 publications

(5 citation statements)

References 5 publications

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“…In this paper, we choose 57.5 GHz for the operating frequency. This is because strong absorption due to atmospheric oxygen at around 60 GHz has a potential to reduce interference among different systems operating in the same frequency band and does not cause significant transmission loss in short-distance propagation systems [11][12][13][14]. In order to observe the statistical properties of these environments in more detail, the cumulative distributions of the rms delay spreads for subway station with and without trains for half-wave dipole receiving antenna and sectored receiving antenna are plotted in Figures 3 and 4 respectively.…”

Section: Numerical Resultsmentioning

confidence: 99%

Wideband communication characteristics of subway stations with and without trains

Chiu

Lin

2005

Wirel. Commun. Mob. Comput.

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The bit error rate (BER) performance for high-speed personal communication service in subway station with and without trains is investigated. The impulse responses of subway stations for any transmitter-receiver location are computed by shooting and bouncing ray/image techniques. By using the impulse responses of these multipath channels, the BER performance of binary phase shift keying (BPSK) with orthogonal frequency division multiplexing (OFDM) system are calculated. Numerical results have shown that the multipath effect by the trains in the subway stations is an important factor for BER performance. In addition, the effect of space diversity techniques and polarization diversity techniques as well as sectored antenna on mitigating the multipath fading is also investigated. Finally, it is worth noting that in these cases the present work provides not only comparative information but also quantitative information on the performance reduction.

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Section: Numerical Resultsmentioning

confidence: 99%

Wideband communication characteristics of subway stations with and without trains

Chiu

Lin

2005

Wirel. Commun. Mob. Comput.

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“…The 60 GHz band still being free and unlicensed, a large bandwidth, for example of the order of 1 GHz, can easily be used. In digital modulation of the 60 GHz band, a problem is ISI [1,5,6].…”

Section: Introductionmentioning

confidence: 99%

A Design of BASK System for Giga-bit Modem

Eom

Kang

Sato³

2006

Wireless Pers Commun

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We propose a binary amplitude shift keying (BASK) system of Giga-bit Modem without intermediate frequency process for the 60 GHz band. The proposed system consists of a high speed shutter of the transmitter and a repeater of the receiver. The shutter of the proposed system is introduced for pulse shaping to improve the intersymbol interference (ISI). The repeater consists of several stage converters. A converter is constructed with a low pass filter and a limiter. The repeater can improve the signal-to-noise ratio (SNR) and make the rectangular pulse train. The advantage of the proposed system is very simple without the intermediate frequency (IF) process.

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“…The 60 GHz band still being free and unlicensed, a large bandwidth, for example of the order of 1 GHz, and easily be used. In digital modulation of the 60 GHz band, a problem is ISI (Inter Symbol Interference) [1]. Digital base band signals often are rectangular pulse train.…”

Section: Introductionmentioning

confidence: 99%

The Performance Improvement of BASK System for Giga-Bit MODEM Using the Fuzzy System

Eom¹,

Hyun²,

Jung³

2010

IJCNS

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In this paper we propose an automatic bandwidth control method for the performance improvement of Binary Amplitude Shift Keying (BASK) system for Giga-bit Modem in millimeter band. To improve the performance of the BASK system with a fixed bandwidth, the proposed method is to adjust a bandwidth of low pass filter in receiver using the fuzzy system. The BASK system consists of a high speed shutter of the transmitter and a counter and a repeater of receiver. The repeater consists of four stage converters, and a converter is constructed with a low pass filter and a limiter. The inputs to the fuzzy system are the reminder and integral of remainder of counter, and output is a bandwidth. We used a Viterbi algorithm to find the optimum detection from output of the counter. Simulation results show that the proposed system improves the performance compared to the fixed bandwidth

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Broadband indoor wireless communications in the (20-60)GHz band: Signal strength considerations

Cited by 12 publications

References 5 publications

Wideband communication characteristics of subway stations with and without trains

Wideband communication characteristics of subway stations with and without trains

A Design of BASK System for Giga-bit Modem

The Performance Improvement of BASK System for Giga-Bit MODEM Using the Fuzzy System

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