A New STC Structure to Achieve Generalized Optimal Diversity with a Reduced Design Complexity

Abstract - We propose a new space-time code (STC) structure that can achieve generalized optimal diversity (GOD) with a reduced design complexity, and also provide an increased coding gain. As a class of GOD STC structure, the new structure achieves the full diversity and an optimized coding gain with minimum delay irrespective of the number of transmit antennas ( tN ) and the rate ( R ), if the rate is less than or equal to the rank of the channel matrix. In the new structure, only R transmit antennas at a time slot are engaged in signal transmission, and a different set of R transmit antennas at a different time slot is used. tN data symbols are combined together using complex weights for each antenna at a time slot. The same set of data symbols is repeated at all the remaining time slots in a code block, but is transmitted through different transmit antennas using different sets of combining weights at different time slots. In particular, the above structure eliminates cross-code pr...

• Type: Conference
• Year: 2007
• Where: ICC
• Authors: Moon Il Lee, Seong Keun Oh, Dong Seung Kwon
• Keywords: Coding Gain, Communications, ICC 2007, Time Slots, Transmit Antennas