A Threshold-Based Adaptive Encoding for Achieving the Diversity-Multiplexing Tradeoff

Recent work has established the diversity-multiplexing tradeoff at high SNR in multiple input multiple output (MIMO) communication systems having Nt and Nr transmit and receive antennas respectively. We introduce a new adaptive encoding (AE) scheme which can switch efficiently between suboptimal encoding schemes, given a very limited non-systematic feedback information to the transmitter side to achieve the optimal tradeoff. When a 2 times 2 MIMO system is considered, the adaptive encoding scheme is presented and shown to achieve the optimal diversity-multiplexing tradeoff. The adaptive-encoding scheme is comprised of two suboptimal encoding achieving respectively the high rate and the low rate optimal segments

[1]  Mohamed Oussama Damen,et al.  Universal space-time coding , 2003, IEEE Trans. Inf. Theory.

[2]  Pramod Viswanath,et al.  Tradeoff-optimality of D-BLAST , 2004, Information Theory Workshop.

[3]  Giuseppe Caire,et al.  On maximum-likelihood detection and the search for the closest lattice point , 2003, IEEE Trans. Inf. Theory.

[4]  P. Vijay Kumar,et al.  Explicit, Minimum-Delay Space-Time Codes Achieving The Diversity-Multiplexing Gain Tradeo , 2004 .

[5]  Giuseppe Caire,et al.  Lattice coding and decoding achieve the optimal diversity-multiplexing tradeoff of MIMO channels , 2004, IEEE Transactions on Information Theory.

[6]  Lizhong Zheng,et al.  Diversity and multiplexing: a fundamental tradeoff in multiple-antenna channels , 2003, IEEE Trans. Inf. Theory.

[7]  J. Belfiore,et al.  Algebraic 3x3, 4x4, 6x6 Space-Time Codes with non-vanishing Determinants , 2004 .

[8]  Babak Hassibi,et al.  High-rate codes that are linear in space and time , 2002, IEEE Trans. Inf. Theory.

[9]  A. Robert Calderbank,et al.  Space-Time block codes from orthogonal designs , 1999, IEEE Trans. Inf. Theory.

[10]  Pranav Dayal,et al.  An optimal two transmit antenna space-time code and its stacked extensions , 2005, IEEE Transactions on Information Theory.

[11]  P. Dayal,et al.  An optimal two transmit antenna space-time code and its stacked extensions , 2003, The Thrity-Seventh Asilomar Conference on Signals, Systems & Computers, 2003.

[12]  B. Sundar Rajan,et al.  STBC-schemes with non-vanishing determinant for certain number of transmit antennas , 2005, ISIT.

[13]  Arogyaswami Paulraj,et al.  Unified design of linear space-time block codes , 2001, GLOBECOM'01. IEEE Global Telecommunications Conference (Cat. No.01CH37270).

[14]  Emanuele Viterbo,et al.  The golden code: a 2 x 2 full-rate space-time code with non-vanishing determinants , 2004, International Symposium onInformation Theory, 2004. ISIT 2004. Proceedings..

[15]  B. Sundar Rajan,et al.  STBC-schemes with nonvanishing determinant for certain number of transmit antennas , 2005, IEEE Transactions on Information Theory.