The Impact of Correction Factor on Capacity for Transmit Diversity and Spatial Multiplexing of MIMO Modes versus SISO Mode in LTE-Downlink System

الموضوعات

علوم تطبيقية وتكنولوجية

الملخص

Manufacturers and service providers compete to meet users’ requirements in communication systems by increasing data rates or capacities either through the efficient use of available resources or by developing new techniques such as using Multiple Input Multiple Output (MIMO) antennas. Although MIMO techniques enabling high capacities, but some MIMO modes in LTE (Long Term Evolution) for UMTS (Universal Mobile Telecommunication System) do not introduce an improvement for the capacity in the existence of system inherent losses (correction factor). The aim of this study is to analyze the capacity of SISO (transmission mode 1), transmit diversity (transmission mode 2) and open loop spatial multiplexing (transmission mode 3) for normal cyclic prefix case in (1.4, 3, 5, 10, 15 and 20) MHz firstly by taking into account the effect of correction factor (losses due to cyclic prefix and reference symbols), secondly by neglecting the effect of correction factor and finally a comparison is made between two approaches, transmission modes 2 and 3 represent MIMO modes. A comparative capacity study for the first three LTE downlink transmission modes for normal cyclic prefix is presented. The capacity is expressed as a function of signal to-noise ratio. The results show that the loss in capacity increases with bandwidth (the range of loss at (5 dB SNR) is from 0.2307 Mbps to 3.8448 Mbps for SISO in 1.4 MHz and 20MHz respectively). The capacities in 1.4 MHz and 5 dB are: 1.8431 and 2.0738 for SISO, 1.7510 Mbps and 2.0738 Mbps for transmit diversity 2X1, 1.6588 Mbps and 2.0738 Mbps for transmit diversity 4X2 and 3.3177 Mbps and 4.1477 Mbps for open loop spatial multiplexing for the first and second approach respectively. The lowest loss resulting from correction factor occurs in SISO and the highest loss occurs in open loop spatial multiplexing. This study recommends not neglecting the effect of correction factor except for SISO mode in 1.4 MHz.

روابط وملفات

التعريف والنوع

رقم الوثيقة

eeb9e97d-8408-4032-9693-09d8bf7d1545

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

73509_1.pdf

بيانات النشر

ترجمة العنوان

تأثير معامل التصحيح على السعة لتعددية الإرسال والتجميع الفراغي لأنماط متعددة الإدخال متعددة الإخراج مقابل نمط مفرد الإدخال مفرد الإخراج في الاتجاه الهابط لنظام التطور بعيد المدى

ألقاب المؤلفين

[{"name_ar":"عبدالله السر حمودة محمد","title_ar":"اعداد","title_en":"Preparation"},{"name_ar":"عبدالله عثمان","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"مجدي باكر محمود أمين","title_ar":"اشراف","title_en":"Supervision"}]

اللغة

English

المصدر والدورية

اسم المصدر

The Impact of Correction Factor on Capacity for Transmit Diversity and Spatial Multiplexing of MIMO Modes versus SISO Mode in LTE-Downlink System

المحتوى والصفحات

عدد الصفحات

0

إشراف وإعداد

الإشراف

عبدالله عثمان, مجدي باكر محمود أمين

الإعداد

عبدالله السر حمودة محمد

الاقتباسات الببليوغرافية