Base_station USES finite number of space_time codes to spread, and small number of antennas to transmit and receive signal, thus TD_SCDMA mobile terminals can obtain maximal spreading gain.

So the bidding strategy should be studied to gain maximal profits and the power quantity-power price curve model of bidding should be analyzed.

The method of how to set up a financial objective system for maximal capital gain and operation strategy system in capital operation is also discussed.