Jointly optimal chunk and power allocation in uplink SC-FDMA
Yükleniyor...
Dosyalar
Tarih
2013
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
IEEE
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
For a single carrier frequency division multiple access (SC-FDMA) system, we obtain the jointly optimal power and chunk allocation policies which maximize the sum rate. Our solution is applicable to both localized and interleaved subcarrier mapping schemes. We solve the joint optimization problem by sequentially solving two sub-problems: power allocation and chunk allocation. Primarily, we use an optimal power allocation algorithm, which we derive from Karush-Kuhn-Tucker (KKT) conditions; and then we convert the optimum chunk assignment problem into a maximum weighted matching problem on a bipartite graph, and hence solve it in polynomial time. We also propose two greedy chunk allocation algorithms with lower complexity, and demonstrate that these algorithms produce near optimal results, especially for interleaved subcarrier mapping, when used in conjunction with optimal power control.
Açıklama
Anahtar Kelimeler
Subcarrier, Systems, Resource management, Frequency division multiaccess, Joints, Uplink, Greedy algorithms, Complexity theory, Frequency conversion
Kaynak
2013 IEEE International Conference on Communications (ICC)
WoS Q Değeri
N/A
Scopus Q Değeri
N/A
Cilt
Sayı
Künye
Mert, T., Kaya, O. & Çırpan, H. A. (2013). Jointly optimal chunk and power allocation in uplink SC-FDMA. 2013 IEEE International Conference on Communications (ICC), 3393-3397. doi:10.1109/ICC.2013.6655072
