Method for selecting transmitting points in a communication system

A method for identifying a specific number of communicating points having relatively smallest accumulated path values from a plurality of transmitting points for a receiving point in a communication system, the method comprising steps of:

• (a) defining a first coordination of each of the plurality of transmitting points and the receiving point on a complex plane;
• (b) transferring the first coordination of the receiving point to a second coordination thereof, wherein the second coordination of the receiving point is near an origin of the complex plane;
• and
• (c) identifying the specific number of transmitting points having relatively smallest accumulated path values based on the second coordination of the receiving point, wherein the step (c) further comprises the following sub-steps:
• (c1) providing a plurality of sequences, each of which includes plural candidates having accumulated path values respectively, and being arranged in an increasing order according to the accumulated path values thereof;
• (c2) selecting one from the plurality of sequences based on the second coordination of the receiving point;
• (c3) choosing the specific number of candidates having the relatively smallest accumulated path values from the selected sequence;
• (c4) identifying a second coordination of each of the specific number of candidates having the relatively smallest accumulated path values on the complex plane;
• and
• (c5) inversely transferring the second coordination of the each of the specific number of candidates having the smallest accumulated path values to the first coordination thereof.