Space-Time Block Codes with Limited Feedback Using Antenna Grouping


Chan-Byoung Chae, Seijoon Shim, Robert W. Heath, Jr., and Sung-Ryul Yun


IEICE Trans. on Communications, vol. E91-B, no. 10, pp. 3387-3390, Oct. 2008


We propose an antenna grouping method that improves the error rate performance of space-time codes in a wide range of mobility environments. The idea is to group symbols to antennas based on limited feedback from the receiver. Our approach requires only two-bits of feedback information to achieve near full diversity and full rate for a four transmit antenna system. Numerical results illustrate the bit/frame error gain over antenna subset selection.

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