HF Channel Estimation for MIMO Systems based on Particle Filter Technique

Kadambi, Govind R.; Krishnan, Kumaresh; Karthikeyan, B.

doi:10.4304/jcm.5.9.674-683

Cited by 6 publications

(2 citation statements)

References 12 publications

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“…Beside its advantages of very large bandwidth, VSAT services have also the disadvantage of vulnerability to the weather condition especially in the rainy condition and high implementation cost. For HF communication, eventhough it has a long-range distance, the HF system has a narrow bandwidth and vulnerability to the ionosphere changes [4]. A comprehensive comparison of the possible technology for the emergency disaster response is described in [5].…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of VoIP Service for Emergency Disaster Responses over WiMAX-WLAN Integrated Network

Mukti

Ananda

Kusrahardjo

2022

JNTE

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As a very large archipelago country, Indonesia has a high intensity of the natural disaster. In many cases, the telecommunication infrastructure collapse during the disaster. Therefore, a prominent and robust emergency telecommunication network is required. In this paper, an implementation of VoIP services over the WiMAX-WLAN integrated network is proposed. The integrated network is designed to provide an alternative of the emergency network during the disaster response. The VoIP service is selected for the study case because this service can be used as a complementary of the telephony service. In this paper, the WiMAX network is designed based on the IEEE Standard 802.16-2004 with the frequency band of 3.5 GHz while the WLAN network is designed based on the IEEE Standard 802.11n. To support many scenarios of network topology, the proposed integrated network is designed in P2P and PMP topologies. Within these network topologies, the network performance is evaluated in terms of delay, jitter, throughput and packet loss, as well as MOS value. The network performance is evaluated over various background traffic. From the experimental evaluation, it shows that the network becomes worse when the network load that is represented by the background traffic exceeding 3 Mbps. In general, there is no significant performance different between P2P and PMP network topology.

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Section: Introductionmentioning

confidence: 99%

Performance Evaluation of VoIP Service for Emergency Disaster Responses over WiMAX-WLAN Integrated Network

Mukti

Ananda

Kusrahardjo

2022

JNTE

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“…Compared with the single input single output (SISO), MIMO achieves higher data rate, better Bit Error Rate (BER) and wider coverage. The combination of MIMO and HF has become the development trend of the next generation HF communication system [1]. Based on polarization diversity and radiation pattern diversity, a heterogeneous array technology has been proposed to implement a HF MIMO system in [2] [3].…”

Section: Introductionmentioning

confidence: 99%

Online LSTM-Based Channel Estimation for HF MIMO SC-FDE System

Wang

Yang

et al. 2020

IEEE Access

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The long distance high frequency (HF) communication suffers from time varying multipath fading. Multiple-Input Multiple-Output (MIMO) and Single-Carrier Frequency Domain Equalization (SC-FDE) have been introduced to HF communication system to combat fading. Because accurate channel estimation is essential for system operation, an architecture of signal flow chart has been designed for the HF MIMO SC-FDE system. In the architecture, an online Long Short-Term Memory (LSTM) estimator is proposed. Different from the channel responses time series created by the LSTM training and prediction loop, a corrected channel responses that are obtained through the received data symbols and the restored transmitting data symbols make up the channel responses time series. In order to evaluate the performance of channel estimators, a simulation system has been built. The uncorrelated and correlated channels are simulated referring to International Telecommunication Union (ITU)-R F.1487 standard and Kronecker model. The simulation results demonstrate that the online LSTM estimator outperforms Least Square (LS) and Recursive Least Square (RLS) estimators in terms of Bits Error Rate (BER) and Mean Square Error (MSE). The online LSTM estimator is capable of tracking the time varying HF MIMO channels. It has potentiality in actual long distance HF communication.

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