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A time interleaved block window burst orthogonal frequency division multiplexing communication system

Gomes, M. ; Silva, V. ; Conceição, F. ; Dinis, R.

Instituto de Telecomunicações, Universidade de Coimbra, Universidade Nova de Lisboa

Invention Title: Block windowed burst orthogonal frequency division multiplexing transmission method with window overlapping and time-interleaving

Patent Nr.: PCT/IB2020/056026

Type: Patent

Regional Coverage: PCT

Priority Date: 26-06-2019

Filing Date: 25-06-2020

To improve the spectral efficiency of TIBWB-OFDM, it is proposed a communication system that implements an alternative packing of the windowed OFDM component blocks that form a TIBWB-OFDM symbol. Adjacent windowed OFDM blocks are partially overlapped, instead of being juxtapose as in original proposed TIBWB-OFDM technique. Although the proposed packing method enables a highly efficient spectral transmission, this is achieved at the expense of intentionally introduced interference, by the transmitter, between consecutive sub-blocks that shape the TIBWB-OFDM symbol, which deteriorates the bit error rate performance. To cope with this additional interference, the receiver must entail both channel equalization and inter-block interference cancellation between OFDM component blocks of the TIBWB-OFDM symbol.