Title :
Ant colony-based radio resource allocation for LTE-A systems with MIMO and CoMP transmission
Author :
Wen-Ching Chung ; Chien-Yuan Chen ; Chin-Ya Huang ; Chung-Ju Chang ; Ren, Fengyuan
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
In this paper, we propose an ant colony-based radio resource allocation (ACRA) scheme for LTE-A downlink systems to support multi-input-multi-output (MIMO) and coordinated multi-point (CoMP) transmission. One of the challenges in the radio resource allocation problem for LTE-A systems with MIMO and CoMP transmission is its high complexity. The ACRA scheme first assigns users to direct transmission bandwidth (DTB) zone or CoMP transmission bandwidth (CTB) zone. In the DTB zone, the data is delivered by only one transmission node; while in the CTB zone, the transmission is carried out among multiple transmission nodes. By using ant colony optimization, the ACRA scheme determines one best allocation solution from multiple possible solutions. Simulation results show that, the ACRA scheme enhances the system throughput by 8.8 % as compared to the dynamic interference avoidance scheme [10].
Keywords :
Long Term Evolution; MIMO communication; ant colony optimisation; interference suppression; radiofrequency interference; ACRA scheme; CTB zone; CoMP transmission bandwidth zone; DTB zone; LTE-A downlink systems; MIMO transmission; ant colony-based radio resource allocation; coordinated multipoint transmission; direct transmission bandwidth zone; dynamic interference avoidance scheme; multiple-input multiple-output transmission; transmission node; Bandwidth; Interference; MIMO; Quality of service; Resource management; Throughput; Transmitting antennas;
Conference_Titel :
Communications in China (ICCC), 2013 IEEE/CIC International Conference on
Conference_Location :
Xi´an
DOI :
10.1109/ICCChina.2013.6671215
