Multi-user detection based on neural network for multi-carrier code division multiple access systems
نویسندگان
چکیده
منابع مشابه
Optimum and sub-optimum multiuser detection based on sphere decoding for multi-carrier code division multiple access systems
When performed using an exhaustive search, the Maximum Likelihood (ML) joint detection of all users in a MultiCarrier Code Division Multiple Access (MC-CDMA) system has a prohibitive complexity, growing exponentially with the number of users and the number of bits in each modulation symbol. An ML multiuser detection algorithm has recently been proposed, with a complexity growing polynomially wi...
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In this paper, multi user detection in Code Division Multiple Access (CDMA) was realized with an adaptive neuro-fuzzy inference system (ANFIS) and the bit error rate (BER) performance was compared with the performances of the matched filter and a neural network receiver. Increment of the number of the active users and the receiving various user signals at the receiver input stage in different p...
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در این پایان نامه به بررسی روش های آشکارسازی در سیستم های mc-cdma می پردازیم. با توجه به ماهیت آشکارسازی در این سیستم ها، تکنیک های آشکارسازی را می توان به دو دسته ی اصلی تقسیم نمود: آشکارسازی سیگنال ارسالی یک کاربر مطلوب بدون در نظر گرفتن اطلاعاتی در مورد سایر کاربران تداخل کننده که از آن ها به عنوان آشکارساز های تک کاربره یاد می شود و همچنین آشکارسازی سیگنال ارسالی همه ی کاربران فعال موجود در...
On multi-carrier code division multiple access (MC-CDMA) modem design
Abstruct: Standard spread-spectrum techniques encounter a severe performance loss under channels with large doppler spread. It is shown that the novel spreadspectrum technique, called multi-canier (MC) CDMA, is dual to direct-sequence CDMA. This enables to derive that MC-CDMA is a signalling technique which allows optimum detection under severe doppler spread. The receiver for this is a RAKE re...
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The Multiple Input Multiple output (MIMO) system are considered to be the strongest candidate for the maximum utilization of available bandwidth. In this paper, the MIMO system with the combination of Multi-Carrier Code Division Multiple Access (MC-CDMA) and Space Time Coding (STC) using the Alamouti’s scheme is considered. A Genetic Algorithm (GA) based receiver with an exceptional relationshi...
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ژورنال
عنوان ژورنال: The International Conference on Electrical Engineering
سال: 2008
ISSN: 2636-4441
DOI: 10.21608/iceeng.2008.34205