A Game-Theoretical Approach to Code Assignment in Multi-Rate WCDMA Systems

• Main Authors: Mei-Huang Liao, 廖美煌
• Other Authors: 賴國華
• Format: Others
• Language: en_US
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/11870944197357803284

碩士 === 元智大學 === 資訊工程學系 === 97 === To provide users with the multiple quality of service (QoS) for various applications, the OVSF code has been used in WCDMA systems. Since the blocking property of OVSF codes, the bandwidth available is limited and should be managed very efficiently. The most approaches for the code assignment problem, which assume the requests demand a fixed transmission rate, often make the inefficient code allocation while the users can demand variable bandwidth requirements. Since the efficiency of the code utilization will be heavily affected by the users’ behaviors and actions, a game-theoretical approach for OVSF code assignment in the multi-rate WCDMA systems is proposed. In the proposed approach, the code assignment problem is modeled as a non-cooperative game and solving through the bargaining process. By solving the conflict between the limited bandwidth, the simulation results show that the proposed approach provides superior performances than other conventional code assignment approaches in terms of performance measures.