کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
562660 875425 2012 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Low-complexity resource allocation with rate balancing for the MISO-OFDMA broadcast channel
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
پیش نمایش صفحه اول مقاله
Low-complexity resource allocation with rate balancing for the MISO-OFDMA broadcast channel
چکیده انگلیسی

This paper presents a low-complexity algorithm for multiuser scheduling and resource allocation in the Multiple Input Single Output (MISO) downlink channel with Orthogonal Frequency Division Multiple Access (OFDMA). The goal of the algorithm is to maximize the sum-rate on the radio channel and to ensure that the rate assignment is suitably balanced among users. The proposed algorithm uses partial Channel State Information (CSI) and therefore has a reduced feedback requirement. It also allows an on-line implementation, based on an ergodic optimization framework with dual optimization and stochastic approximation. Performance and complexity reduction are quantified by considering comparison with other solutions in a realistic single-cell system configuration. It is shown that the algorithm is effective to balance average rate among users even in heterogeneous and non-stationary channel conditions with lower computational complexity and feedback requirements.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Signal Processing - Volume 92, Issue 12, December 2012, Pages 2975–2989
نویسندگان
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