On Modeling and Analysis of a Coded OFDMA Downlink in a Multi-Cell Environment
نویسندگان
چکیده
In this paper a coded OFDMA downlink concept in a multi-cell environment is analyzed. A resource management can be applied for the downlink transmission scheme and this can improve the performance for low system loads. The paper also examines the use of a time/frequency hopping component. For reducing simulation complexity, the Gaussian approximation is investigated as an assumption for the existing inter-cell interference. Simulation results are given to determine the effectiveness of the proposed resource management, time/frequency hopping, and the assumed interference approximation.
منابع مشابه
Analysis of Coded OFDMA in a Downlink Multi-Cell Scenario
In this paper a coded OFDMA downlink concept for 4G in a multi-cell environment is analyzed. A radio resource management can be applied for the downlink transmission scheme and this can improve the performance for low system loads. The paper also examines the use of a time/frequency hopping component. Further investigations are done by introducing a propagation model taking into account path lo...
متن کاملA Unified Analysis for Direct-Sequence CDMA in the Downlink of OFDM Systems
This paper presents a unified analysis for the downlink BER performance of convolutionally coded and single-user detected MC-CDMA, MCDS-CDMA and TFL-CDMA. As a special case, an analysis is obtained also for OFDMA. The intra-cell interference is analyzed under the assumption of Hadamard spreading codes and a correlated frequency-selective Rayleigh-fading channel. The presented results assume err...
متن کاملTransmit Diversity Vs Beamforming for Multi-User OFDM Systems
In an Orthogonal Frequency Division Multiplexing (OFDM) system, downlink beamforming can be implemented either before IDFT (frequency domain) or after IDFT (time domain) module in a base station transmitter. We denote the former scheme as PreIDFT downlink beamforming, and the latter as Post-IDFT downlink beamforming. In this work, we have compared Pre-IDFT downlink beamforming with Space-Time B...
متن کاملMulti-Cell Cooperation with Fairness Constraint in the Downlink OFDMA Cellular Networks
In this letter, we study cell cooperation in the downlink OFDMA cellular networks. The proposed cooperation scheme is based on fractional frequency reuse (FFR), where a cooperation group consists of three sector antennas from three adjacent cells and the subchannels of each cooperation group are allocated coordinately to users. Simulation results demonstrate the effectiveness of the proposed sc...
متن کاملError Performance for MC-CDMA and OFDMA in a Downlink Multi-Cell Scenario
This paper studies the error performances of two different 4G downlinks in a multi-cell environment. On the one hand, an orthogonal frequency division multiplexing (OFDM) based multiple access scheme (OFDMA), and on the other hand, a multi-carrier code division multiple access (MC-CDMA) scheme is proposed. Both transmission schemes are implemented in a cellular structure. The cellular environme...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2004