Adaptive Sub-carrier Block Modulation with Differentially Modulated Pilot Symbol Assistance for Down-link OFDM Using Up-link Delay Spread Chang-Jun Ahn, Satoshi Takahashi, Hiroshi Harada (NICT)
In an AMS/OFDM system, base station is in control of the modulation level of each sub-carrier, and then, adaptive modula... [more]