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تسجيل مستخدم جديدتقنيات الاستشعار الضغطي للاتصالات اللاسلكية الجديدة الأجيال
Compressive Sensing Techniques for Next-Generation Wireless Communications
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تتم مراجعة مجموعة من العمليات اللاسلكية الفعالة والتقنيات الممكنة تحت عدسة المكبرة في سعي الاستكشاف للتظاهرات المختلفة للعمليات المرتبطة ، حيث يمكن استدعاء العينة الأقل من نايكويست كمزيد من الفوائد من الحصول على تمثيل في مجال التحويل الناعم. على سبيل المثال ، يتطلب الأنظمة الجيل التالي التردد العالي للعينة النايكويست ، ولكن سيكون استجابة الزوج الإشارة القناة (CIR) ناعمة جدا في التردد العالي للنايكويست ، بما في ذلك عدد قليل من الطرق الانعكاس الانتشار. وهذا يشجع على استخدام تقنيات الاستشعار المضغوط لاستغلال الموارد الراديوية المحدودة وبنية الشبكة بشكل فعال بشكل يدق. يتم مراجعة مجموعة متنوعة من التقنيات العينة المضغوطة المتقدمة ونحن ننتهي مع مجموعة من الأفكار البحثية المحتملة المثيرة ذات الصلة بمجموعات الهوائيات الكبيرة ، والوصول المتعدد غير المستقيم (NOMA) ، وحلول الشبكة المتداخلة القوية (UDN) ، لا سيما.
A range of efficient wireless processes and enabling techniques are put under a magnifier glass in the quest for exploring different manifestations of correlated processes, where sub-Nyquist sampling may be invoked as an explicit benefit of having a sparse transform-domain representation. For example, wide-band next-generation systems require a high Nyquist-sampling rate, but the channel impulse response (CIR) will be very sparse at the high Nyquist frequency, given the low number of reflected propagation paths. This motivates the employment of compressive sensing based processing techniques for frugally exploiting both the limited radio resources and the network infrastructure as efficiently as possible. A diverse range of sophisticated compressed sampling techniques is surveyed and we conclude with a variety of promising research ideas related to large-scale antenna arrays, non-orthogonal multiple access (NOMA), and ultra-dense network (UDN) solutions, just to name a few.
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