Spatial division multiplexing (SDM) techniques increase the total throughput by transmitting independent information streams through multiple transmit antennas whereas space time coding (STC) techniques utilize diversity gain. Hybrid space-time block code (STBC) schemes proposed in  combine the above two techniques to maximize the link performance. We propose a decision feedback detection method to improve the performance of the hybrid STBC scheme for orthogonal frequency division multiplexing (OFDM). In this scheme, we take the error propagation effect into account to enhance the detection performance. Simulation results show that the proposed method outperforms the conventional hybrid STBC detection algorithm by more than 3dB at 1% frame error rate for frequency selective fading channels.
Bibliographical noteFunding Information:
Manuscript received March 29, 2005. The associate editor coordinating the review of this letter and approving it for publication was Prof. Hamid Jafarkhani. This research was supported in part by the Korea Science and Engineering Foundation under Grant R08-2003-000-10761-0, and in part by Samsung electronics research project (Skypass4G).
- Decision feedback detection
- Orthogonal frequency division multiplexing (OFDM)
- Space-time block code (STBC)
ASJC Scopus subject areas
- Modelling and Simulation
- Computer Science Applications
- Electrical and Electronic Engineering