TY - GEN
T1 - A bit-loaded OFDMA for in-home power line communications
AU - Hayasaki, Taro
AU - Umehara, Daisuke
AU - Denno, Satoshi
AU - Morikura, Masahiro
PY - 2009/9/21
Y1 - 2009/9/21
N2 - The in-home broadband power line communication (PLC) is drawing attention to us lately. The broadband PLC has regulation issues for the coexistence with shortwave wireless systems. Therefore, orthogonal frequency division multiplexing (OFDM) is adopted for the broadband PLC. On the other hand, the power line channels suffer from frequency selective fading. It is effective to load appropriate bits on each subcarrier in the OFDM for PLC. In this paper, we propose a bit loading algorithm that maximizes the bit rate by optimizing not only the bit quantity on each subcarrier but also the whole code rate of the forward error correction (FEC) code subject to constraints on the total bit error rate (BER) and power on each subcarrier. Furthermore, we investigate orthogonal frequency division multiple access (OFDMA) as a multiple access scheme on the in-home power line networks. We show that the proposed OFDMA scheme is superior to a time division multiple access (TDMA) scheme from the viewpoint of throughput by computer simulations.
AB - The in-home broadband power line communication (PLC) is drawing attention to us lately. The broadband PLC has regulation issues for the coexistence with shortwave wireless systems. Therefore, orthogonal frequency division multiplexing (OFDM) is adopted for the broadband PLC. On the other hand, the power line channels suffer from frequency selective fading. It is effective to load appropriate bits on each subcarrier in the OFDM for PLC. In this paper, we propose a bit loading algorithm that maximizes the bit rate by optimizing not only the bit quantity on each subcarrier but also the whole code rate of the forward error correction (FEC) code subject to constraints on the total bit error rate (BER) and power on each subcarrier. Furthermore, we investigate orthogonal frequency division multiple access (OFDMA) as a multiple access scheme on the in-home power line networks. We show that the proposed OFDMA scheme is superior to a time division multiple access (TDMA) scheme from the viewpoint of throughput by computer simulations.
KW - Bit loading algorithm
KW - Forward error correction
KW - OFDM
KW - OFDMA
KW - Power line communication
UR - http://www.scopus.com/inward/record.url?scp=70349162486&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349162486&partnerID=8YFLogxK
U2 - 10.1109/ISPLC.2009.4913424
DO - 10.1109/ISPLC.2009.4913424
M3 - Conference contribution
AN - SCOPUS:70349162486
SN - 9781424437924
T3 - 2009 IEEE International Symposium on Power Line Communications and its Applications, ISPLC 2009
SP - 171
EP - 176
BT - 2009 IEEE International Symposium on Power Line Communications and its Applications, ISPLC 2009
T2 - 2009 IEEE International Symposium on Power Line Communications and its Applications, ISPLC 2009
Y2 - 29 March 2009 through 1 April 2009
ER -