Redirigiendo al acceso original de articulo en 17 segundos...
ARTÍCULO
TITULO

A MAP Overhead Aware Two-Dimensional OFDMA Burst Construction Algorithm

Lin-Kung Chen    
Pi-Tzong Jan    
Yen-Hung Chen    
Rui-Ze Hung and Yen-Jung Lee    

Resumen

Conventional orthogonal frequency division multiple access (OFDMA) burst construction methods can only support limited numbers of connections due to the map overhead and corresponding limitations in the numbers of orthogonal resources blocks, which limits the capacity of current 4G and the following 5th generation (5G) networks. This study therefore provides a novel OFDMA burst construction algorithm and enhanced burst indexing aware algorithm (EHA), which try to maximize the throughput while considering the subchannel diversity and optimizing burst indexing issues. The EHA not only allocates the subchannels with the best channel quality for each burst, but also groups the bursts to alleviate the MAP overhead. Simulation results showed that the EHA yields two times the throughput that has been achieved using previous algorithms under a heavy load. Two contributions of the EHA are: (1) the overhead of burst indexing decreases because massive numbers of connections can be accommodated by one burst; and (2) the overall throughput increases due to that one connection with large data transferring requirements can be split and distributed into several bursts and placed on the subchannels with good channel quality to adopt better modulation coding scheme (MCS), if the saved bandwidth in this burst construction is more than the increased overhead of burst indexing.

Palabras claves

 Artículos similares

       
 
Ziyang Tang, Xiang Liu, Hanlin Chen, Joseph Hupy and Baijian Yang    
Unmanned Aerial Systems, hereafter referred to as UAS, are of great use in hazard events such as wildfire due to their ability to provide high-resolution video imagery over areas deemed too dangerous for manned aircraft and ground crews. This aerial pers... ver más
Revista: AI

 
Cheol Won Lee, Jun Dong Lee, Junho Ahn, Hyung Jun Oh, Jung Kyu Park and Heung Seok Jeon    
The grid map, representing area information with the number of cells, is a widely used mapping scheme for mobile robots and simultaneous localization and mapping (SLAM) processes. However, the tremendous amount of cells in a grid map for a detailed map r... ver más
Revista: Applied Sciences