TY - GEN
T1 - Parallel QRD-M encoder for decentralized multi-user MIMO systems
AU - Mohaisen, Manar
AU - Mohaisen, Abedelaziz
AU - Li, Yanhua
AU - Luo, Pengkui
PY - 2011
Y1 - 2011
N2 - In this paper, we propose a parallel QRDM encoder (PQRDME) for multi-user MIMO (MU-MIMO) systems. The proposed algorithm transforms the full tree-search problem of the conventional QRDME algorithm into parallel partial trees that are processed in parallel, leading to a tremendous increase in the encoding throughput. The proposed algorithm outperforms the fixed-complexity sphere encoder (FSE) and performs close to the optimum performance for several scenarios. For instance, in a 4x4 MUM-MIMO system, the proposed PQRDME lags the optimum performance by 0.3 dB while outperforming the FSE by 2.3dB at a target BER of 10-4. In this case, the proposed algorithm also doubles the encoding throughput of the conventional QRDME algorithm.
AB - In this paper, we propose a parallel QRDM encoder (PQRDME) for multi-user MIMO (MU-MIMO) systems. The proposed algorithm transforms the full tree-search problem of the conventional QRDME algorithm into parallel partial trees that are processed in parallel, leading to a tremendous increase in the encoding throughput. The proposed algorithm outperforms the fixed-complexity sphere encoder (FSE) and performs close to the optimum performance for several scenarios. For instance, in a 4x4 MUM-MIMO system, the proposed PQRDME lags the optimum performance by 0.3 dB while outperforming the FSE by 2.3dB at a target BER of 10-4. In this case, the proposed algorithm also doubles the encoding throughput of the conventional QRDME algorithm.
UR - http://www.scopus.com/inward/record.url?scp=80052169476&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80052169476&partnerID=8YFLogxK
U2 - 10.1109/icc.2011.5963389
DO - 10.1109/icc.2011.5963389
M3 - Conference contribution
AN - SCOPUS:80052169476
SN - 9781612842332
T3 - IEEE International Conference on Communications
BT - 2011 IEEE International Conference on Communications, ICC 2011
T2 - 2011 IEEE International Conference on Communications, ICC 2011
Y2 - 5 June 2011 through 9 June 2011
ER -