Design schemes of space-time block codes concatenated with turbo codes

Higher transmission rate and reliable communication over fading channels are major research pursuits of current wireless communications. The space-time block codes (STBC) have been introduced to improve those research goals by simple processing algorithms at the transmitter and the receiver ends. STBC designs with the help of an orthogonal design method are described. The STBC designed in a quasi-orthogonal method is focused on keeping the higher transmission rate at the cost of the diversity gain. On the other hand, STBC designed in complex orthogonal methods emphasize the high diversity gain rather than the rate. Design schemes of turbo concatenation to STBC using various methods are introduced and detailed performance analyses are provided.