Patent ID: 8677223

Claim:
An apparatus comprising: a channel encoder to encode payload data for transmission through a feedback channel, said channel encoder including: a tail biting convolutional code (TBCC) encoder to encode said payload data using a TBCC, said TBCC encoder generating encoded bits; a channel interleaver to demultiplex said encoded bits, in a sequential manner, into multiple subblocks, wherein the number of subblocks depends upon a tail biting convolutional coding rate of said TBCC encoder, said channel interleaver including a number of subblock interleavers to provide subblock interleaving on said multiple subblocks, said subblock interleaving following a predetermined interleaving index table; and a bit selector to select interleaved bits from outputs of said subblock interleavers and to provide these bits at an output for subsequent modulation; a modulator to modulate encoded output data of said channel encoder using quadrature phase shift keying to generate modulated symbols; and a symbol sequence to subcarrier mapper to map a sequence of symbols that includes said modulated symbols output by said modulator and multiple pilot symbols to predetermined feedback channel subcarriers, wherein said predetermined feedback channel subcarriers are arranged in three distributed feedback mini-tiles (FMTs) within an uplink feedback channel.