A load bearing building panel is composed of light weight concrete and reinforcing within the panel body adjacent to the first and second major faces. One or more MSBC paging channels can be assigned unique time slots, such that although the channels can be identical, they are disjointed in time. Alternatively, the step is achieved by a mixing step of a paper making material and a liquid, a material micro-fabricating step of applying a pressure to a mixed solution obtained by the mixing step so as to pass through an orifice and thereafter run into a device wall, and a paper making step including the micro-fabricated material. A first stage of multi-stage LDPC encoding is performed using the input data and a subset of the plurality of circulant vectors; the number of circulant vectors in the subset equals the integer multiplier.