Provided is an apparatus and method for varying the length of an error check code of a PDU according to the length of a payload in a broadband wireless communication system. A plurality of sets of cells surrounding the particular cell are identified as Paging Depths and are stored in a lookup table in a serving Mobile Switching Center. In particular, fruits of plants of the present invention retain marketability over extended periods of time compared to presently available peppers. The energy recovery turbine drives the booster pump. BCD leads to scalar closed-form updates rendering the method’s computational complexity per iteration linear with respect to the grid size.