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Reducing Symbol Loss Probability in the Downlink of an OFDMA Based Wireless Network

9 years 4 months ago
Reducing Symbol Loss Probability in the Downlink of an OFDMA Based Wireless Network
—This paper studies the problem of minimizing symbol loss probability while keeping the system throughput above a certain threshold in downlink transmission of future OFDMA based wireless networks that rely on imperfect one-bit channel state feedback. To solve this problem, we study different precoding classes and propose a new class of precoding matrices that can gain a better result. This work is different from previous OFDM precoding literature in two main aspects. First, it addresses a more practical case where one-bit channel state feedback is available at the base station. Second, it compares precoding classes and proposes a new one. We prove analytically that our proposed precoding class has a lower symbol loss probability than the existing classes. Numerical evaluations show that a large gain in symbol loss probability is achieved by our class in comparison with the other classes.
Amin Alamdar Yazdi, Sameh Sorour, Shahrokh Valaee,
Added 30 May 2010
Updated 30 May 2010
Type Conference
Year 2008
Where ICC
Authors Amin Alamdar Yazdi, Sameh Sorour, Shahrokh Valaee, Ronny Yongho Kim
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