Pregled bibliografske jedinice broj: 156640
Adaptive Channel and Power Allocation Algorithm for Multiuser OFDM Systems
Adaptive Channel and Power Allocation Algorithm for Multiuser OFDM Systems // 12. International Conference on Software, Telecommunications and Computer Networks / Rožić, Nikola ; Begušić, Dinko (ur.).
Split: Sveučilište u Splitu, 2004. str. 415-418 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
CROSBI ID: 156640 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Adaptive Channel and Power Allocation Algorithm for Multiuser OFDM Systems
Autori
Ilić, Željko ; Dulj, Josip ; Bažant, Alen
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
12. International Conference on Software, Telecommunications and Computer Networks
/ Rožić, Nikola ; Begušić, Dinko - Split : Sveučilište u Splitu, 2004, 415-418
Skup
SoftCOM 2004
Mjesto i datum
Venecija, Italija; Dubrovnik, Hrvatska; Split, Hrvatska, 10.10.2004. - 13.10.2004
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
OFDM; loading algorithm; bit allocation; power allocation
Sažetak
In this paper we propose a new loading algorithm that maximizes the total data rate of multiuser orthogonal frequency division multiplexing (OFDM) systems in a downlink transmission. The data rate maximization problem is formulated by allowing that a subcarrier could be shared by multiple users. The transmit power adaptation scheme (loading algorithm) is derived by solving the maximization problem via two steps: subcarrier assignment for users and power allocation for subcarriers. In order to reduce the computational complexity level in the proposed transmit power adaptation problem we propose a simple method, in form of theorem, which assignes subchannels to users and distributes power among subchannels. Also, we consider a case which includes constraints on transmit power and bits.
Izvorni jezik
Engleski
Znanstvena područja
Elektrotehnika
