de la PROfessional Mobile Radio large bande basée sur la modulation FILter Bank MultiCarrier Evolution of the Wideband Professional Mobile Radio Based on the Filter Bank MultiCarrier Modulation • ANR Project with Cassidian, CEA-Leti, TeamCast and CentraleSupélec • CentraleSupélec’s part: Blind equalization in FBMC for PMR Networks
 (1/4) p 0 m n Simple implementation POP Pair of pilots (POP)  Simple implementation Good spectral efficiency (same as OFDM) Weak performance [c1] noise variance interference variance channel variance
in OFDM/OQAM , ,  (4/4) m n IAM Reduction of the noise and interference energy p+ Interference approximation method (IAM)  Reduction of the noise and interference energy Simple implementation Loss of spectral efficiency Good performance [c1]
in LTE … … 1 RB in proposed scheme Application to PMR band: some changes in the LTE PHY parameters [c4] (2/3) … … 2τ0 … … … … … … … TOFDM 15 KHz 5 KHz added subcarrier a. LTE pilot distribution b. Proposed rectangular distribution
LTE PHY parameters [c4] (3/3) 1 RB Channel estimation along the whole band pilot time frequency frequency PMR signals BB BB PMR signal added carriers frequency More flexibility Good channel estimation over each sub-band
T PPN … … … … y0,n y1,n ym,n yM-1,n INPUT Equal. am,n Fm,n - Goal: Solve the optimization problem yM-1,n - How? Use the stochastic gradient with - µ is the step-size parameter - J a given cost function 2 degrees of freedom
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