Analysis of nonlinear companding schemes for papr reduction of SC-FDMA signals - Details

Author：

Sun, Enchang (Sun, Enchang.) | Sun, Yanhua (Sun, Yanhua.) | Si, Pengbo (Si, Pengbo.) | Yang, Ruizhe (Yang, Ruizhe.) | Zhang, Yanhua (Zhang, Yanhua.) (Scholars：张延华)

Indexed by：

EI Scopus

Abstract：

The　3rd　generation　partnership　project　(3GPP)　long　term　evolution　(LTE)　standard　uses　orthogonal　frequency　division　multiplexing　access　(OFDMA)　in　downlink　and　single　carrier　frequency　division　multiple　access　(SC-FDMA)　scheme　for　the　uplink　transmissions,　which　utilizes　single　carrier　modulation　and　frequency　domain　equalization.　In　this　paper,　we　compared　and　analyzed　the　performance　of　the　nonlinear　companding　schemes,　i.e.,　Raised-Cosine-like　scheme　and　power　function　scheme,　to　reduce　the　peak-to-average　power　ratio　(PAPR)　of　SC-FDMA　signals,　and　summarized　the　nonlinear　features　that　the　schemes　should　have.　Both　the　nonlinear　schemes　could　transform　the　original　SC-FDMA　signals　into　nonlinear-distributed.　Moreover,　the　schemes　can　compress　the　large　input　signals,　while　maintaining　the　average　power　constant.　Computer　simulation　results　show　that　the　PAPR　reduction　performance　of　the　power　function　scheme　is　better　than　that　of　the　Raised-Cosine-like　scheme.　©　2011　IEEE.

Keyword：

Frequency division multiple access Mathematical transformations Long Term Evolution (LTE) Compandor circuits Frequency domain analysis Orthogonal frequency division multiplexing Mobile telecommunication systems

Author Community：

[ 1 ] [Sun, Enchang]School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, China
[ 2 ] [Sun, Enchang]State Key Laboratory of Integrated Services Networks, Xidian University, Xi'an, China
[ 3 ] [Sun, Yanhua]School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, China
[ 4 ] [Si, Pengbo]School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, China
[ 5 ] [Yang, Ruizhe]School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, China
[ 6 ] [Zhang, Yanhua]School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, China