TY - GEN
T1 - Error resilient MIMO detector for memory-dominated wireless communication systems
AU - Khairy, Muhammad S.
AU - Shen, Chung An
AU - Eltawil, Ahmed M.
AU - Kurdahi, Fadi
N1 - Generated from Scopus record by KAUST IRTS on 2019-11-20
PY - 2012/12/1
Y1 - 2012/12/1
N2 - In current broadband MIMO-OFDM systems such as 3GPP LTE, embedded buffering memories occupy a large portion of chip area and a significant amount of power consumption. Due to the dense structure of memories, they are especially vulnerable to scaling effects such as process variation. These effects (hardware errors) become more pronounced when aggressive voltage scaling is used due to the reduced voltage overhead. To address this issue, we present an error resilient MIMO detector. First, we derive a combined distribution of the received data in a MIMO-OFDM receiver that includes both the noise incurred by the wireless channel and errors introduced at the receiver buffering memory due to aggressive voltage scaling. Using the derived distribution, a modified MIMO detection algorithm based on the tree-searching structure is presented. A case study is presented showing that the proposed approach can achieve near-optimal performance in the presence of both channel noise and memory error, while 40% to 50% of memory power savings are realized. © 2012 IEEE.
AB - In current broadband MIMO-OFDM systems such as 3GPP LTE, embedded buffering memories occupy a large portion of chip area and a significant amount of power consumption. Due to the dense structure of memories, they are especially vulnerable to scaling effects such as process variation. These effects (hardware errors) become more pronounced when aggressive voltage scaling is used due to the reduced voltage overhead. To address this issue, we present an error resilient MIMO detector. First, we derive a combined distribution of the received data in a MIMO-OFDM receiver that includes both the noise incurred by the wireless channel and errors introduced at the receiver buffering memory due to aggressive voltage scaling. Using the derived distribution, a modified MIMO detection algorithm based on the tree-searching structure is presented. A case study is presented showing that the proposed approach can achieve near-optimal performance in the presence of both channel noise and memory error, while 40% to 50% of memory power savings are realized. © 2012 IEEE.
UR - http://ieeexplore.ieee.org/document/6503668/
UR - http://www.scopus.com/inward/record.url?scp=84877643792&partnerID=8YFLogxK
U2 - 10.1109/GLOCOM.2012.6503668
DO - 10.1109/GLOCOM.2012.6503668
M3 - Conference contribution
SN - 9781467309219
BT - GLOBECOM - IEEE Global Telecommunications Conference
ER -