TY - GEN
T1 - Joint rate and power adaptation strategies in DS/CDMA communications over fading channels
AU - Lee, Ye Hoon
PY - 2012
Y1 - 2012
N2 - We consider combined rate and power adaptation schemes in direct-sequence code division multiple access (DS/CDMA) communications, where the transmission power and the data rate are jointly adapted relative to channel variations. We propose to allocate the transmission power proportional to , where G i is the channel power gain and p is a real number, and to adapt the data rate simultaneously so that a desired transmission quality is maintained. We analyze the average data rate of the proposed adaptation scheme, and show that the proposed joint adaptation scheme provides up to 3.7-5.4 and 1.5-3.2 dB of power gains over power only adaptation and rate only adaptation, respectively, when peak-to-average power ratio is 2 to 10, in a Rayleigh fading channel with δ = 0.5, where δ is the decaying exponent of multipath intensity profile (MIP).
AB - We consider combined rate and power adaptation schemes in direct-sequence code division multiple access (DS/CDMA) communications, where the transmission power and the data rate are jointly adapted relative to channel variations. We propose to allocate the transmission power proportional to , where G i is the channel power gain and p is a real number, and to adapt the data rate simultaneously so that a desired transmission quality is maintained. We analyze the average data rate of the proposed adaptation scheme, and show that the proposed joint adaptation scheme provides up to 3.7-5.4 and 1.5-3.2 dB of power gains over power only adaptation and rate only adaptation, respectively, when peak-to-average power ratio is 2 to 10, in a Rayleigh fading channel with δ = 0.5, where δ is the decaying exponent of multipath intensity profile (MIP).
KW - adaptation
KW - DS/CDMA
KW - Nakagami
KW - variable power and rate
UR - http://www.scopus.com/inward/record.url?scp=84869789526&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-35264-5_55
DO - 10.1007/978-3-642-35264-5_55
M3 - Conference contribution
AN - SCOPUS:84869789526
SN - 9783642352638
T3 - Communications in Computer and Information Science
SP - 410
EP - 417
BT - Computer Applications for Security, Control and System Engineering - International Conferences, SecTech, CA, CES3 2012, Held in Conjunction with GST 2012, Proceedings
T2 - 2012 Int. Conf. on SecTech 2012, 2012 Int. Conf. on Control and Automation, CA 2012 and the 2012 Int. Conf. on Circuits, Control, Communication, Electricity, Electronics, Energy, System, Signal and Simulation, Held in Conjunction with GST 2012
Y2 - 28 November 2012 through 2 December 2012
ER -