Signal transmission method and device
AssigneeChina Academy of Telecommunications Technology
InventorsShaohui Sun, Yingmin Wang, Hai Tang, Yuemin Cai
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Abstract
A signal transmission method, which includes: each data symbol needing to be transmitted is weighted and repeatedly extended to obtain the extended data symbol of each data symbol; the extended data symbol of each data symbol and the pilot frequency symbol are modulated and mapped to the specified time-frequency locations of each corresponding block repeat resource block to obtain each corresponding repeat data unit block; each repeat data unit block is transmitted. A signal transmission device is also disclosed in the present invention.
Claims13
A signal transmission method, comprising:
- weighting and repeatedly spreading respective data symbols to be transmitted, to obtain spread data symbols of the respective data symbols;
- modulating and mapping the spread data symbols of the respective data symbols and a pilot symbol into specified time-frequency locations in respective corresponding Block Repeat resource Blocks, BRBs, to obtain respective corresponding repeat data element blocks;
- and
- transmitting the respective repeat data element blocks;
- wherein weighting and repeatedly spreading the respective data symbols to be transmitted comprises:
- repeating the data symbols by a Repeat Factor, RF, and selecting an available weight factor sequence from a group of weight factor sequences corresponding to the RF;
- and
- multiplying the respective data symbols obtained by repeating by respective weight factors in the selected weight factor sequence to weight and repeatedly spread the data symbols.
A signal transmission device, comprising:
- a data symbol spreading unit configured to weight and repeatedly spread respective data symbols to be transmitted, to obtain spread data symbols of the respective data symbols;
- a repeat data element block unit configured to modulate and map the spread data symbols, which are obtained by the data symbol spreading unit, and a pilot symbol into specified time-frequency locations in respective corresponding Block Repeat resource Blocks, BRBs, to obtain respective corresponding repeat data element blocks;
- and
- a transmission unit configured to transmit the respective repeat data element blocks obtained by the repeat data element block unit;
- wherein the data symbol spreading unit weight and repeatedly spreads the data symbols to be transmitted by a Repeat Factor, RF, and the data symbol spreading unit comprises:
- a module configured to repeat the data symbols by the RF and to select an available weight factor sequence from a group of weight factor sequences corresponding to the RF;
- and
- a module configured to multiply respective weight factors in the selected weight factor sequence by the respective data symbols obtained by repeating to weight and repeatedly spread the data symbols.
Dependencies are inferred from the claim text.