Although some earlier MIMO standards were built on orthogonal space-time block codes (O-STBCs), which are limited to two transmit antennas and data rates, the need for higher data rates motivates the exploration of higher antenna configurations using different QO-STBC schemes. The standard QO-...
Although some earlier MIMO standards were built on orthogonal space-time block codes (O-STBCs), which are limited to two transmit antennas and data rates, the need for higher data rates motivates the exploration of higher antenna configurations using different QO-STBC schemes. The standard QO-...
Unfortunately, also, QO-STBC complicates the receiver design due to the lack of orthogonality among the codes. Such a limitation also leads to ISI in the decoding matrix of the QO-STBC receiver and diminishes the BER performance. In terms of the detection matrix, these off-diagonal (ISI) ...