ALAMOUTI SPACE-TIME CODING FOR VEHICULAR COMMUNICATIONS IN THE PRESENCE OF CHANNEL ESTIMATION ERRORS

Serdar Özgür Ata

Makale detayları

ALAMOUTI SPACE-TIME CODING FOR VEHICULAR COMMUNICATIONS IN THE PRESENCE OF CHANNEL ESTIMATION ERRORS

Yazarlar:

Serdar Özgür Ata

Yayıncı:

Kütahya Dumlupinar University

Ana Başlıklar:

Wireless Communication Systems and Technologies (Incl. Microwave and Millimetrewave)

Dergi:

Journal of Scientific Reports-A Issue 054, pp.76-93

Belge Tipi:

Makale

Yayın Tarihi:

9/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001293069

pISSN:

2687-6167

Anahtar kelimeler:

Özet:

 In this paper, the error performance of the Alamouti space-time coding STC scheme is investigated for vehicle-to-vehicle V2V communication systems over imperfect cascaded fading channels. In vehicular communication systems, perfect knowledge of the channel state information is not available to the users at all times due to the rapid movement of communicating vehicles and fast change of the rich scattering environment which makes the fading effects in wireless channels more severe. Therefore, in the analysis, we consider the erroneous estimation of the channel gain, which is more realistic for practical scenarios. For this purpose, we first derive the moment-generation function MGF of the channel fading coefficient with estimation error in the case of the cascaded Nakagami-m fading conditions. Then, using the MGF, we obtain the closed-form symbol-error-rate SER expressions of Alamouti STC with two transmitting and L receiving antennas for the M-PSK and M-QAM modulation schemes. Then, the exact ergodic capacity expression is derived for the proposed system. Furthermore, the analytical results are verified through Monte-Carlo simulations. Numerical results show that the SER performance of V2V communication systems can be improved significantly by using Alamouti STC even in case of harsh fading conditions and full channel-state information is not available due to estimation errors.

 In this paper, the error performance of the Alamouti space-time coding STC scheme is investigated for vehicle-to-vehicle V2V communication systems over imperfect cascaded fading channels. In vehicular communication systems, perfect knowledge of the channel state information is not available to the users at all times due to the rapid movement of communicating vehicles and fast change of the rich scattering environment which makes the fading effects in wireless channels more severe. Therefore, in the analysis, we consider the erroneous estimation of the channel gain, which is more realistic for practical scenarios. For this purpose, we first derive the moment-generation function MGF of the channel fading coefficient with estimation error in the case of the cascaded Nakagami-m fading conditions. Then, using the MGF, we obtain the closed-form symbol-error-rate SER expressions of Alamouti STC with two transmitting and L receiving antennas for the M-PSK and M-QAM modulation schemes. Then, the exact ergodic capacity expression is derived for the proposed system. Furthermore, the analytical results are verified through Monte-Carlo simulations. Numerical results show that the SER performance of V2V communication systems can be improved significantly by using Alamouti STC even in case of harsh fading conditions and full channel-state information is not available due to estimation errors.

 In this paper, the error performance of the Alamouti space-time coding STC scheme is investigated for vehicle-to-vehicle V2V communication systems over imperfect cascaded fading channels. In vehicular communication systems, perfect knowledge of the channel state information is not available to the users at all times due to the rapid movement of communicating vehicles and fast change of the rich scattering environment which makes the fading effects in wireless channels more severe. Therefore, in the analysis, we consider the erroneous estimation of the channel gain, which is more realistic for practical scenarios. For this purpose, we first derive the moment-generation function MGF of the channel fading coefficient with estimation error in the case of the cascaded Nakagami-m fading conditions. Then, using the MGF, we obtain the closed-form symbol-error-rate SER expressions of Alamouti STC with two transmitting and L receiving antennas for the M-PSK and M-QAM modulation schemes. Then, the exact ergodic capacity expression is derived for the proposed system. Furthermore, the analytical results are verified through Monte-Carlo simulations. Numerical results show that the SER performance of V2V communication systems can be improved significantly by using Alamouti STC even in case of harsh fading conditions and full channel-state information is not available due to estimation errors.

 In this paper, the error performance of the Alamouti space-time coding STC scheme is investigated for vehicle-to-vehicle V2V communication systems over imperfect cascaded fading channels. In vehicular communication systems, perfect knowledge of the channel state information is not available to the users at all times due to the rapid movement of communicating vehicles and fast change of the rich scattering environment which makes the fading effects in wireless channels more severe. Therefore, in the analysis, we consider the erroneous estimation of the channel gain, which is more realistic for practical scenarios. For this purpose, we first derive the moment-generation function MGF of the channel fading coefficient with estimation error in the case of the cascaded Nakagami-m fading conditions. Then, using the MGF, we obtain the closed-form symbol-error-rate SER expressions of Alamouti STC with two transmitting and L receiving antennas for the M-PSK and M-QAM modulation schemes. Then, the exact ergodic capacity expression is derived for the proposed system. Furthermore, the analytical results are verified through Monte-Carlo simulations. Numerical results show that the SER performance of V2V communication systems can be improved significantly by using Alamouti STC even in case of harsh fading conditions and full channel-state information is not available due to estimation errors.

Makale detayları

ALAMOUTI SPACE-TIME CODING FOR VEHICULAR COMMUNICATIONS IN THE PRESENCE OF CHANNEL ESTIMATION ERRORS

Yazarlar:

Serdar Özgür Ata

Yayıncı:

Kütahya Dumlupinar University

Ana Başlıklar:

Wireless Communication Systems and Technologies (Incl. Microwave and Millimetrewave)

Dergi:

Journal of Scientific Reports-A Issue 054, pp.76-93

Belge Tipi:

Makale

Yayın Tarihi:

9/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001293069

pISSN:

2687-6167

Alamouti space-time coding

cascaded fading channels

channel estimation error

ergodic capacity

symbol-error rate

vehicular communications

Sayı

Makale detayları

ALAMOUTI SPACE-TIME CODING FOR VEHICULAR COMMUNICATIONS IN THE PRESENCE OF CHANNEL ESTIMATION ERRORS

Yazarlar: Serdar Özgür Ata

Yayıncı: Kütahya Dumlupinar University

Ana Başlıklar: Wireless Communication Systems and Technologies (Incl. Microwave and Millimetrewave)

Dergi: Journal of Scientific Reports-A Issue 054, pp.76-93

Belge Tipi: Makale

Yayın Tarihi: 9/2023

Belge Dili: İngilizce

Document ID (Org No.): 2001293069

pISSN: 2687-6167

Alamouti space-time coding

cascaded fading channels

channel estimation error

ergodic capacity

symbol-error rate

vehicular communications

Sayı

Yazarlar:

Serdar Özgür Ata

Yayıncı:

Kütahya Dumlupinar University

Ana Başlıklar:

Wireless Communication Systems and Technologies (Incl. Microwave and Millimetrewave)

Dergi:

Journal of Scientific Reports-A Issue 054, pp.76-93

Belge Tipi:

Makale

Yayın Tarihi:

9/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001293069

pISSN:

2687-6167