Microsoft Word - SparseChannelEstimationMIMOOFDMTWRN

requ comm comm inpu (MIM (AF-squa these caus chan infor estim using impl are g LS-b K TWR I. I are d by th [1][1 broa mult (MIM enha fadin mult spec chan netw two tradi layer exch syste TWR trans fully syste of th infor remo Spa Ampl Abstract—Accu uired for cohe munication qu munication sy ut multi-outpu MO-OFDM) a-TWRN). Lin are (LS), have e methods nev e performanc nnel estimatio rmation in th mation problem g sparse decom lemented by L given to confir based channel Keywords—spa RN; compressed INTRODUC It is well know developing rap he skyrocketin 1]. Until now adband wirele tiple antenna MO) that is b ancing system ng. The secon tiplexing (OF ctral efficient nnel fading [ work (TWRN) time slots. itional TWRN r TWRN (s hange, two tim em capacity 6 RN can also smitted power y, combine the em is one of p he key challen rmation (CSI oval and coher arse C lify-an E-m urate channe erent detection uality of serv ystems. One of ut orthogonal amplify and fo ear channel been propose er take advant ce loss. In th on method to he CIR at e m is formulat mposition theo LASSO algorith rm the superio estimation met arse Channel E d sensing (CS) TION wn that wirele pidly due to th ng number of w, there have ess communic transmission becoming one m capacity and nd technique i FDM) modu and robustnes [1]. The third) that implem When com N (see Fig. 1(a ee Fig. 1(b) me slots TWR 66.7% and 10 improve tra r [2]. To take em into an adv promising cand nges is how t I) which is rent detection hanne nd-Fo G De Gradu 6-6-05 Aza mail: {gui,pen l impulse re n and it can vice in next-g f the advanced frequency-div orward two-w estimation m d to estimate tage of channe is paper, we o exploit the each end user ted as compre ory and the es hm. Computer rity of propose thod. ess communic hat the huge m wireless users three promisi cations. The over multi-i e of the prev d combating s orthogonal f ulation which ss mitigates fr d technique ments informa mparing with a)) and three ti)) which ach RN (see Fig. 3 00%, respecti ansmission ra e advantage o vanced wirele didate techniq to obtain accu applied for at …