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.
| Original language | English |
|---|---|
| Title of host publication | The 20th Personal, Indoor and Mobile Radio Communications Symposium 2009 (PIMRC'09) |
| Place of Publication | Los Alamitos |
| Publisher | IEEE |
| Pages | 1757-1761 |
| Number of pages | 5 |
| ISBN (Print) | 978-1-4244-5123-4 |
| DOIs | |
| Publication status | Published - Sept 2009 |
| Event | 20th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2009 - Tokyo, Japan Duration: 13 Sept 2009 → 16 Sept 2009 Conference number: 20 |
Publication series
| Name | |
|---|---|
| Publisher | IEEE Computer Society Press |
Conference
| Conference | 20th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2009 |
|---|---|
| Abbreviated title | PIMRC |
| Country/Territory | Japan |
| City | Tokyo |
| Period | 13/09/09 → 16/09/09 |
Keywords
- METIS-266513
- EWI-17158
- IR-71165