无线电信号传输的区域覆盖

Regional Coverage of Radio Signal Transmission

以一个无线电信号覆盖圆域的工程问题为例,建立了用若干个小圆覆盖大圆区域的数学模型并求出其最优解,同时还给出了实现最优方案的充分条件和必要条件。对于较少用户情形,以覆盖效率为指标确定实现面积覆盖的最少小圆数目;对大容量用户,综合考虑用户密度和覆盖密度进行网格设计,在保证完全覆盖的同时避免了通信设备的闲置和拥堵,使方案达到最优。采用的方法可推广到一般情形,对通信工程中信号传输覆盖问题有一定的指导作用。

Problems in covered circles of radio signals are taken as an example and then the mathematical model is established by a number of small circles covering big circle regions and the optimal solution is given. Sufficient conditions and necessary conditions are also given to achieve optimal schemes. For minor users, covering efficiency used as the index to determine the fewest small circles to realize the coverage areas. For bulk users, grid design shall fully consider user density and coverage density, while ensuring full coverage, avoiding the idle and congestion of communication equipment to achieve optimal scheme. The method can be extended to general cases and has some guidance in covering problems of signal transmission engineerinz.