Wireless;
Technology;
Innovation;
Institute,;
Key;
Laboratory;
of;
Universal;
Wireless;
Communication,;
Ministry;
of;
Education,;
Beijing;
University;
of;
Posts;
and;
Telecommunications,;
Beijing;
100876,;
China;
蚁群优化; 比特分配; 子载波; 自适应; OFDM系统; 线性算法; 启发式方法; 组合优化问题;