A digital demodulation method for a quadrature amplitude modulated signal uses a phase locked loop to generate a local carrier signal. The compound preform is infiltrated with a liquid metal which is then solidified to form a metal matrix composite. The upper segments are operably connected to the lower segment using threaded elements. The ISH is communicatively coupled to the wireless device and the broadband network. The composition and method utilize an opiate analgesic and a calcium calmodulin kinase inhibitor as active agents to treat pain in mammals, including humans. The MIMO wireless communication apparatus includes a communication unit configured to transmit and receive control information divided into a second control information containing information related to the demodulation and decoding of traffic channel and a first control information containing information related to the MIMO separation of the second control information.