TY - GEN

T1 - On channel capacity of OFDM with SLM method for PAPR reduction

AU - Handali, Yaron

AU - Nizan, Itamar

AU - Wulich, Dov

PY - 2006/12/1

Y1 - 2006/12/1

N2 - One major drawback of OFDM is the large Peak to Average Power Ratio (PAPR). OFDM is a linear modulation, therefore large PAPR requires large linear dynamic range of the transmitter (TX) as well as the receiver (RX) paths. The weak point in the TX-RX chain is the Power Amplifier (PA). As known, a linear PA which is able to amplify signals with large PAPR has to have a large dynamic range that results with low power efficiency, thus by reducing PAPR one may improve the efficiency of PA. A PAPR reducing method in OFDM, based on SeLective Mapping (SLM) is considered. As known, SLM requires transmitting a Side Information (SI). Increasing the SLM order reduces the PAPR but increases the size of SI. In order to transmit the SI some power and bandwidth are needed, those are taken from the total power and bandwidth budget and thus lowering the capacity. On the other hand the reduced PAPR improves the PA efficiency, thus increases the channel capacity. Accordingly maximal value of channel capacity is expected as well as an optimal SLM order.

AB - One major drawback of OFDM is the large Peak to Average Power Ratio (PAPR). OFDM is a linear modulation, therefore large PAPR requires large linear dynamic range of the transmitter (TX) as well as the receiver (RX) paths. The weak point in the TX-RX chain is the Power Amplifier (PA). As known, a linear PA which is able to amplify signals with large PAPR has to have a large dynamic range that results with low power efficiency, thus by reducing PAPR one may improve the efficiency of PA. A PAPR reducing method in OFDM, based on SeLective Mapping (SLM) is considered. As known, SLM requires transmitting a Side Information (SI). Increasing the SLM order reduces the PAPR but increases the size of SI. In order to transmit the SI some power and bandwidth are needed, those are taken from the total power and bandwidth budget and thus lowering the capacity. On the other hand the reduced PAPR improves the PA efficiency, thus increases the channel capacity. Accordingly maximal value of channel capacity is expected as well as an optimal SLM order.

UR - http://www.scopus.com/inward/record.url?scp=50249188978&partnerID=8YFLogxK

U2 - 10.1109/EEEI.2006.321129

DO - 10.1109/EEEI.2006.321129

M3 - Conference contribution

AN - SCOPUS:50249188978

SN - 1424402301

SN - 9781424402304

T3 - IEEE Convention of Electrical and Electronics Engineers in Israel, Proceedings

SP - 138

EP - 140

BT - 2006 IEEE 24th Convention of Electrical and Electronics Engineers in Israel, IEEEI

T2 - 2006 IEEE 24th Convention of Electrical and Electronics Engineers in Israel, IEEEI

Y2 - 15 November 2006 through 17 November 2006

ER -