Low-overhead AoA-aided Constant Envelope Precoding for Massive MIMO Syetems in Presence of Partial Channel State Information
Publish Year: 1398
نوع سند: مقاله کنفرانسی
زبان: English
View: 629
This Paper With 5 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
ICIKT10_028
تاریخ نمایه سازی: 5 بهمن 1398
Abstract:
This paper investigates the multi-user precoding in downlink transmission of a massive multiple input multiple output (MIMO) system. To this end, a constant envelope precoding (CEP) structure is utilized for the sake of decreasing the implementation cost as well as increasing the hardwareefficiency. In the following, in order to reduce the overhead imposed by sharing the channel coefficients among the BS and users, an efficient construction is proposed, where, exploiting the statistics of the channel features, such as the angle of arrival (AoA), only the partial channel state information (CSI) is exchanged. Moreover, utilizing semi-definite relaxation (SDR), a convex realization for the outgoing problem is devised, inwhich the corresponding scheme leads to the global optimum. Numerical results demonstrate, from the downlink rate per userpoint of view, the performance of the proposed method confronts a negligible drop compared to the perfect CSI case, while theoverall overhead of the system is significantly reduced.
Keywords:
Massive MIMO , Channel State Information Precoding
Authors
Marjan Abbasi Mosleh
Department of Electrical Engineering K. N. Toosi University of Technology Tehran, Iran
Seyyed MohammadMahdi Shahabi
Department of Electrical Engineering K. N. Toosi University of Technology Tehran, Iran
Mohsen Ghasimi
Department of Electrical Engineering K. N. Toosi University of Technology Tehran, Iran
Mehrdad Ardebilipour
Department of Electrical Engineering K. N. Toosi University of Technology Tehran, Iran