Opportunistic Error Correction for MIMO


Shao, Xiaoying and Slump, Cornelis H. (2009) Opportunistic Error Correction for MIMO. In: IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC '09 , 13-16 Sept. 2009, Tokyo, Japan.

Abstract:In this paper, we propose an energy-efficient scheme to reduce the
power consumption of ADCs in MIMO-OFDM systems. The proposed
opportunistic error correction scheme is based on resolution
adaptive ADCs and fountain codes. The key idea is to transmit a
fountain-encoded packet over one single sub-carrier per antenna and
to transmit more packets than needed for decoding. Comparing to the
IEEE 802.11n standard, this approach allows around 83\% of power
saving in ADCs for a $2\times2$ system and 90\% for a $4\times4$
system. With the current FEC scheme defined in the IEEE 802.11n
standard, a $4\times4$ system requires twice amount of power in ADCs
as a $2\times2$ system when receiving the same amount of information
with the same power. However, using opportunistic error correction
in a $4\times4$ system costs only around 1.4 times amount of energy
in ADCs comparing to a $2\times2$ system.
Item Type:Conference or Workshop Item
Copyright:© 2009 IEEE
Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:
Link to this item:http://purl.utwente.nl/publications/71165
Official URL:http://dx.doi.org/10.1109/PIMRC.2009.5449870
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