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2017•Unpublished venueRequires access

On the performance of NCC-OFDMA systems in the presence of carrier frequency offset

Ali Reza Heidarpour, Güneş Karabulut Kurt, Murat Uysal

Open publisher page 2 citations

Abstract

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 with orthogonal frequency division multiple access (OFDMA). In this paper, we derive outage probability and diversity gain of NCC-OFDMA systems in the presence of carrier frequency offset (CFO). Our results demonstrate that NCC-OFDMA system is capable to achieve full spatial and frequency diversity in noise limited system where the CFO variance σ2ε→ 0. However, in interference limited case where the CFO variance σ2ε> 0, error floor occurs leading zero diversity gain. Numerical results are further presented to validate our analytical findings.

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What this paper is about

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 with orthogonal frequency division multiple access (OFDMA). In this paper, we derive outage probability and diversity gain of NCC-OFDMA systems in the presence of carrier frequency offset (CFO). Our results demonstrate that NCC-OFDMA system is capable to achieve full spatial and frequency diversity in noise limited system where the CFO variance σ2ε→ 0. However, in interference limited case where the CFO variance σ2ε> 0, error floor occurs leading zero diversity gain. Numerical results are further presented to validate our analytical findings.

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Available abstract

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 with orthogonal frequency division multiple access (OFDMA). In this paper, we derive outage probability and diversity gain of NCC-OFDMA systems in the presence of carrier frequency offset (CFO). Our results demonstrate that NCC-OFDMA system is capable to achieve full spatial and frequency diversity in noise limited system where the CFO variance σ2ε→ 0. However, in interference limited case where the CFO variance σ2ε> 0, error floor occurs leading zero diversity gain. Numerical results are further presented to validate our analytical findings.

Key concepts: Carrier frequency offset, Computer science, Offset (computer science), Orthogonal frequency-division multiplexing, Orthogonal frequency-division multiple access, Algorithm, Frequency offset, Diversity gain

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