Scheduling Strategies for Frequency Selective Multi-User MIMO-OFDMA Systems

نویسنده

  • Johannes Marotzke
چکیده

Modern wireless networks are faced with an increasing demand for higher data rates, better quality of service, and higher overall network capacities. In order to comply to these demands various limits, like the limited availability of the frequency spectrum and a complex space-time varying wireless environment must be overcome. Transmission schemes based on Multiple Input Multiple Output (MIMO) techniques and Orthogonal Frequency Division Multiple Access (OFDMA) are promising technologies that increase spectral efficiency, and counter the effects of

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Application of WLF to OFDMA MU-MIMO Systems II: Frequency-Domain Packet Scheduling

We propose a Mutual Information (MI) based spatial frequency domain packet scheduling algorithm for uplink Orthogonal Frequency Division Multiple Access (OFDMA) multiuser multiple-input, multiple-output (MIMO) systems in this paper. The proposed scheduler is designed particularly for signal constellation constrained MIMO systems. The superiority of the investigated scheduler coupled with the in...

متن کامل

On the Frequency-Selective Scheduling Gain in SDMA-OFDMA Systems

Orthogonal Frequency Division Multiple Access (OFDMA) is a multi-user version of the Orthogonal Frequency Division Multiplexing (OFDM) transmission technique, which divides a wideband channel into a number of orthogonal narrowband subchannels, called subcarriers. An OFDMA system takes advantage of both frequency diversity (FD) gain and frequency-selective scheduling (FSS) gain. A FD gain is ach...

متن کامل

Application of WLF to OFDMA MU-MIMO Systems I: Frequency-Domain Equalization

This paper presents a novel iterative receiver strategy incorporating widely linear filtering for uplink Orthogonal Frequency Division Multiple Access (OFDMA) multiuser multiple-input, multiple-output (MIMO) systems. The proposed iterative receiver scheme achieves better performance without the loss of spectrum efficiency compared to the conventional iterative receivers; The superiority of the ...

متن کامل

Mutual Information Based Packet Scheduling for Linearly Precoded Multiuser MIMO Systems

In this paper, we present a novel Mutual Information (MI) based spatial frequency domain packet scheduling for downlink Orthogonal Frequency Division Multiple Access (OFDMA) multiuser MIMO systems. The proposed scheduler is designed to exploit the available multiuser diversity in time, frequency and spatial domains. The analysis model is based on the generalized 3GPP LTE downlink transmission f...

متن کامل

On the Performance, Complexity, and Fairness of Suboptimal Resource Allocation for Multiuser MIMO-OFDMA Systems

The combination of Multiple Input Multiple Output (MIMO) and Orthogonal Frequency Division Multiple Access (OFDMA) is a promising solution to the flexible and spectrally efficient provision of data services in future wireless communication systems. However, adaptive Resource Allocation (RA) in frequency, time, and space in Multi-User MIMO-OFDMA systems is very complex due to the inclusion of th...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2012