Performance analysis for truncated ARQ based DSFBC-CO-OFDM communication scheme
المؤلف | Ahmed I. |
المؤلف | Aljahdali S. |
المؤلف | Hundewale N. |
المؤلف | Mohamed A. |
المؤلف | Shah S.I. |
تاريخ الإتاحة | 2022-04-21T08:58:36Z |
تاريخ النشر | 2011 |
اسم المنشور | Proceedings of the ISCA 24th International Conference on Computer Applications in Industry and Engineering, CAINE 2011 |
المصدر | Scopus |
الملخص | We develop and analyze an ARQ (Automatic Repeat reQuest) based distributed space-frequency block code-orthogonal frequency division multiplexing protocol for cooperative communications (DSFBC-CO-OFDM). At PHY layer, space frequency block codes (SFBC) are spread over OFDM subcarriers instead of OFDM symbols to compensate for the small coherence time. Medium access control (MAC) layer packet retransmission limit has been used as an actuator for transmit cooperative diversity initialization. Transmit diversity is provided by the relays in close proximity to source node. Closed form expressions are obtained for packet error rate (PER) and average delay for the proposed scheme in Nakagami-m fading channels. This cooperative scheme achieves lower signal-to-noise ratio (SNR) values for desired packet error rate and markedly improves the average delay per packet compared to the direct transmissions at low SNR regime. Finally, the results of computer simulations are included to demonstrate the efficacy of the proposed scheme and to verify the accuracy of analytical expressions. |
اللغة | en |
الناشر | IEEE |
الموضوع | Analytical expressions Automatic repeat request Average delay Close proximity Closed-form expression Co-operative diversity Coherence time Communication schemes Cooperative schemes Low SNR Medium access control layer Nakagami-m fading channels OFDM symbols Packet error rates Packet retransmissions Performance analysis Signaltonoise ratio (SNR) Source nodes Space-frequency Space-frequency block codes Sub-carriers Transmit diversity Computer simulation Fading channels Medium access control Orthogonal frequency division multiplexing Signal to noise ratio Wireless networks Data communication systems |
النوع | Conference Paper |
الصفحات | 103-109 |
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