The Research of Rotated Quasi-Orthogonal Space-Time Block Codes for OFDM Communications Based on IEEE 802.16d

This paper presents a rotated quasi-orthogonal space-time block codes (RQOSTBC) scheme for OFDM communication based on IEEE 802.16 protocol. At the transmitter, the data streams for the OFDM tones enter separate QOSTBC coders whose outputs are then forwarded to the different antennas. At the receiver, the pairwise decoding can be employed. The SUI channel model which is recommended by the IEEE 802.16 working group is used in the simulations to compare performance of the STBC and QOSTBC. Simulations are conducted to show the effectiveness of the proposed approach.