کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
11009923 1815031 2018 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A simple low-complexity algorithm for generalized spatial modulation
ترجمه فارسی عنوان
یک الگوریتم کم پیچیدگی ساده برای مدولاسیون فضایی عمومی
کلمات کلیدی
مدولاسیون فضایی عمومی، تشخیص حداکثر احتمال، رمز گشایی اسپره، پیچیدگی محاسباتی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
چکیده انگلیسی
Generalized spatial modulation (GSM) is an extension of spatial modulation which is significant for the next generation communication systems. Optimal detection process for the GSM is the maximum-likelihood (ML) detection which jointly detects the antenna combinations and transmitted symbols. However, the receiver is much more complicated than SM due to inter-antenna interference and/or increased number of combinations. Therefore, the computational complexity of the ML detection grows with the number of transmit antennas and the signal constellation size. In this letter, we introduce a novel and simple detection algorithm which uses sub-optimal method based on the least squares solution to detect likely antenna combinations. Once the antenna indices are detected, ML detection is utilized to identify the transmitted symbols. For obtaining near-ML performance while keeping lower complexity than ML detection, sphere decoding is applied. Our proposed algorithm reduces the search complexity while achieving a near optimum solution. Computer simulation results show that the proposed algorithm performs close to the optimal (ML) detection resulting in a significant reduction of computational complexity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: AEU - International Journal of Electronics and Communications - Volume 97, December 2018, Pages 63-67
نویسندگان
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