Browsing by Author "Heidarpour, Ali Reza"
Now showing items 1-9 of 9
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Diversity-multiplexing tradeoff for network coded cooperative OFDMA systems
Heidarpour, Ali Reza (2016-08)Cooperative communication (CC) exploits the broadcasting nature of wireless transmission and creates a distributed multiple-input multiple-output (MIMO) system among the wireless nodes which are physically separated from ... -
Diversity-multiplexing tradeoff for network coded cooperative OFDMA systems
Heidarpour, Ali Reza; Kurt, G. K.; Uysal, Murat (IEEE, 2015)Network coded cooperation (NCC) is an effective method to improve the throughput efficiency in cooperative wireless networks. In an effort to have further gains over the initial works, which build upon the assumption of ... -
Finite-SNR diversity-multiplexing tradeoff for network coded cooperative OFDMA systems
Heidarpour, Ali Reza; Karabulut Kurt, G.; Uysal, Murat (IEEE, 2017-03)Network-coded cooperation (NCC) is an effective method to improve the throughput efficiency in cooperative wireless networks. The combined use of orthogonal frequency division multiplexing (OFDM) with NCC has been further ... -
Finite-SNR DMT analysis for multisource multirelay NCC systems with imperfect CSI
Heidarpour, Ali Reza; Karabulut Kurt, G.; Uysal, Murat (IEEE, 2016)Network coded cooperative (NCC) systems have recently attracted attention with their high spectral and power efficiency. In this paper, we investigate the information theoretical limits of NCC systems in the presence of ... -
Non-line-of-sight ultraviolet communications over atmospheric turbulence channels
Ardakani, Maryam Haghighi; Heidarpour, Ali Reza; Uysal, Murat (IEEE, 2015)Ultraviolet (UV) communication enables non-line-of sight (NLOS) outdoor wireless connectivity and is particularly desirable to relax or eliminate pointing and tracking requirements of infrared links. In the current literature, ... -
On the performance of NCC-OFDMA systems in the presence of carrier frequency offset
Heidarpour, Ali Reza; Kurt, G. K.; Uysal, Murat (IEEE, 2017)Network coded cooperative (NCC) systems have recently gained increasing attention due to their high power and spectral efficiency. For high speed data transmission over frequency-selective channels, NCC is further combined ... -
Performance analysis of MIMO NLOS UV communications over atmospheric turbulence channels
Ardakani, Maryam Haghighi; Heidarpour, Ali Reza; Uysal, Murat (IEEE, 2016)Strong molecular and aerosol scattering in ultraviolet (UV) wavelengths enable the non-line-of-sight (NLOS) outdoor wireless connectivity which is attractive in many applications due to covertness and security. In the ... -
Performance analysis of MIMO NLOS UV communications over atmospheric turbulence channels
Ardakani, Maryam Haghighi; Heidarpour, Ali Reza; Uysal, Murat (IEEE, 2016)Strong molecular and aerosol scattering in ultraviolet (UV) wavelengths enable the non-line-of-sight (NLOS) outdoor wireless connectivity which is attractive in many applications due to covertness and security. In the ... -
Performance investigation of the modified costas carrier recovery loop for a QPSK modulated signal in the presence of co-channel interference
Heidarpour, Ali Reza; Montazerolghaem, M. A.; Saberali, S. M. (IEEE, 2016)One of the important challenges in communication systems is drift in the carrier frequency of received signal due to the clock skew and Doppler effect. Every communication receiver requires an automatic frequency control ...
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