摘要:
A receiver and method for HARQ combining of a received codeword in a receiver with a FEC decoder, the method including computing Log Likelihood Ratios (LLRs) of demodulated soft symbols of the received codeword and outputting the LLRs as a-priori soft bits; performing iterative decoding of the a-priori soft bits in a Forward Error Correction (FEC) decoder; outputting a posteriori soft bits of the a priori soft bits of the received codeword from the FEC decoder; and HARQ combining the a posteriori soft bits with a retransmission of the received codeword.
摘要:
A receiver for wireless broadband telecommunication transmissions, the receiver including a demodulator for receiving transmitted modulated symbols, a channel deinterleaver memory coupled to the demodulator for receiving interleaved soft symbols and outputting deinterleaved soft symbols, an LLR calculator coupled to the channel deinterleaver memory for receiving the deinterleaved soft symbols and calculating LLRs therefore, a descrambler coupled to the LLR calculator for descrambling the LLRs, and an interleaved scrambling sequence generator coupled to the descrambler for generating an interleaved scrambling sequence and providing it to the descrambler.
摘要:
A method for soft remodulation in a receiver of transmissions over a wireless telecommunication system, the method including obtaining from a FEC decoder a-posteriori LLR values, converting the a-posteriori LLR values into bit probabilities and computing improved soft symbols estimates as expected values using the bit probabilities in a recursive algorithm. Preferably, the step of converting is implemented using a pre-computed Look Up Table (LUT). Preferably, the step of computing is implemented in a Multiplier-Accumulator having a SIMD structure.
摘要:
A receiver and method for HARQ combining of a received codeword in a receiver with a FEC decoder, the method including computing Log Likelihood Ratios (LLRs) of demodulated soft symbols of the received codeword and outputting the LLRs as a-priori soft bits; performing iterative decoding of the a-priori soft bits in a Forward Error Correction (FEC) decoder; outputting a posteriori soft bits of the a priori soft bits of the received codeword from the FEC decoder; and HARQ combining the a posteriori soft bits with a retransmission of the received codeword.
摘要:
A method and system for processing LLRs, in a receiver, of transmissions over a wireless telecommunication system, the method including receiving multiple soft symbols, selecting a set of appropriate instructions for LLR calculation for the soft symbols, arranging the soft symbols in a register of a processor according to the selected instructions, selecting an appropriate single instruction from the set of instructions to be implemented by the processor using the soft symbols in the register as operands, and calculating, by a computation unit, multiple LLR values for the multiple soft symbols, in parallel, by means of the selected instruction.
摘要:
A method and device for reducing Peak-to-Average Power Ratio (PAPR) of a transmitted signal in a wireless telecommunication system utilizing CFR technique, the method including performing peak-windowed clipping of a transmitted signal using at least two cascaded clipping stages and individually configuring parameters for each clipping stage before performing the peak-windowed clipping.
摘要:
A method and system for processing LLRs, in a receiver, of transmissions over a wireless telecommunication system, the method including receiving multiple soft symbols, selecting a set of appropriate instructions for LLR calculation for the soft symbols, arranging the soft symbols in a register of a processor according to the selected instructions, selecting an appropriate single instruction from the set of instructions to be implemented by the processor using the soft symbols in the register as operands, and calculating, by a computation unit, multiple LLR values for the multiple soft symbols, in parallel, by means of the selected instruction.
摘要:
A method for soft remodulation in a receiver of transmissions over a wireless telecommunication system, the method including obtaining from a FEC decoder a-posteriori LLR values, converting the a-posteriori LLR values into bit probabilities and computing improved soft symbols estimates as expected values using the bit probabilities in a recursive algorithm. Preferably, the step of converting is implemented using a pre-computed Look Up Table (LUT). Preferably, the step of computing is implemented in a Multiplier-Accumulator having a SIMD structure.
摘要:
A method and device for reducing Peak-to-Average Power Ratio (PAPR) of a transmitted signal in a wireless telecommunication system utilizing CFR technique, the method including performing peak-windowed clipping of a transmitted signal using at least two cascaded clipping stages and individually configuring parameters for each clipping stage before performing the peak-windowed clipping.