ID 原文 译文
45256 并由此提出了基于降维裂解策略的系统极化码并行编码算法， Based on this, system polarization code parallel coding algorithm for cracking strategy was proposed.
45257 然后在 AWGN 信道下进行了仿真验证和计算复杂度分析。 Simulation and computational complexity analysis were carried out on AWGN channel.
45258 结果表明，与传统算法相比，所提算法编码增益略优或基本保持一致，但计算复杂度优化率最高可达 80.92%， The results show that the coding gain of the above algorithm is slightly better than the traditional one or almost the same, but the computational complexity is up to 80.92%, which is more suitable for hardware implementation and engineering application.
45259 更适合于硬件实现与工程应用，具有一定的实用价值。 It is more suitable for hard-ware implementation and has a certain practical value.
45260 当信道存在多普勒频偏和相位噪声时，采用相干检测的 MIMO-OFDM 系统需要复杂和精确的频偏估计与多普勒补偿。 When there are Doppler frequency deviation and phase noise in channel, the MIMO-OFDM system with coherent detection requires complicated and accurate frequency offset estimation and Doppler compensation.
45261 为此，提出了一种多天线 Chirp-BOK 最佳随相检测方案，在保证抗干扰和抗频偏衰落的条件下，通过空分复用提高了系统容量。 Based on this,an optimal random phase detection was proposed in multi-antenna Chirp-BOK system, which improved the system capacity by space division multiplexing in the condition of anti-interference and anti-frequency deviation.
45262 经推导，多天线 Chirp-BOK 系统的等效 MIMO 信道系数矩阵为实矩阵，从而降低了信道估计的复杂度，同时，也避免了检测受随机相位的影响。 The equivalent MIMO channel coefficient matrix of multi-antenna Chirp-BOK system was derived as a real matrix, so as to reduce the complexity of channel estimation and avoid to be affected by random phase.
45263 最后通过 NI USRP-2942R 平台搭建了 2×2 无线收发 MIMO-Chirp-BOK 验证系统。 A two plus two wireless transceiver system was built on the NI USRP-2942R platform.
45264 实测和仿真验证了所提系统具有低复杂度，对相偏、频偏不敏感的优点， Simulation and experiment results show that the MIMO-Chirp-BOK system inherits the advantages of low complexity, insensitivity to phase shift and frequency offset of Chirp-BOK communication system.
45265 并通过收发双天线获得了 2 倍的通信容量。 It achieves multiplied communication capacity by increasing the number of antennas.