Patent No. EP4708796 (titled "Distributed Virtual Resource Block Allocation For Ofdma") was filed by Vtect on Jan 22, 2009. The application was issued on Aug 5, 2026.
OFDMA resource mapper that spreads virtual blocks across physical blocks to ensure frequency diversity in wideband systems. The device maps each virtual block to two spaced physical blocks, with the gap size calculated as an integer multiple of the square of the number of blocks per group. This approach guarantees even distribution across the bandwidth regardless of operating width. For very narrow bands, the system skips grouping and uses a fixed small spacing instead.

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