scholarly journals Area spectral efficiency performance comparison of downlink fractional frequency reuse schemes for MIMO heterogeneous networks

2014 ◽  
Author(s):  
Sherief Hashima ◽  
Osamu Muta ◽  
Masoud Alghonimey ◽  
Hossam Shalaby ◽  
Hiroshi Frukawa ◽  
...  
Keyword(s):  
Heterogeneous Networks ◽  
Spectral Efficiency ◽  
Performance Comparison ◽  
Frequency Reuse ◽  
Fractional Frequency Reuse ◽  
Fractional Frequency ◽  
Efficiency Performance ◽  
Area Spectral Efficiency

scholarly journals Enhancing Cell Throughput & Area Spectral Efficiency Using Two Level Soft Frequency Reuse Technique

2019 ◽  
Vol 8 (9) ◽  
pp. 1524-1530
Keyword(s):  
Heterogeneous Networks ◽  
Spectral Efficiency ◽  
Frequency Reuse ◽  
Small Cells ◽  
Fractional Frequency Reuse ◽  
Interference Coordination ◽  
Average Cell ◽  
Cell Edge ◽  
Area Spectral Efficiency ◽  
Soft Frequency Reuse

Heterogeneous networks consist of different characteristics of networks like small cells having low power deployed along with macro cells having high power. Interference is the major issue to degrade the quality of signal in the heterogeneous networks. Number of interference coordination techniques are implemented to minimize interference. One of the interference coordination technique is fractional frequency reuse (FFR) and soft frequency reuse (SFR). In this paper two level Soft Frequency Reuse technique is implemented along with sectors. Parameters such as area spectral efficiency and cell edge throughput are calculated and compared with conventional FFR and Multi-level FFR technique with 6 sectoring. Better results are analyzed while simulating in the network model. Cell edge throughput improved to 54 Mbps, average cell throughput improved to 667 Mbps, peak data throughput improved to 76.7 Mbps and area spectral efficiency improved to 70.3 bits/sec/Hz/cell.

Resource Allocation using Dynamic Fractional Frequency Reuse

2017 ◽  
Vol 6 (1) ◽  
pp. 34-44
Author(s):  
Anitha S Sastry ◽  
Akhila S
Keyword(s):  
Resource Allocation ◽  
Spectral Efficiency ◽  
Cellular System ◽  
Frequency Reuse ◽  
Base Stations ◽  
Cellular Structures ◽  
Fractional Frequency Reuse ◽  
Ofdma System ◽  
Fractional Frequency

This article describes how a multi user cellular system insists on having increase in the spectral efficiency for the number of users and base stations. As far as cellular structures are concerned, the users at the edges experience inter cellular interference (ICI) than the users at the cell center. This is due to lack of resource allocation at cell edges. To improve the throughput at the edges a technique called Fractional Frequency Reuse (FFR) is employed. This article explores the Dynamic FFR(DFFR) in OFDMA system to improve the overall throughput.

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