ID 原文 译文
7304 在低密度奇偶校验编码的多输入多输出正交频分复用系统中,针对接收信号存在多天线干扰、多径衰落和加性噪声的问题,提出了不同调制方式下基于线性规划(linear programming,LP)的联合半盲均衡与解码算法。 In low density parity check code of multi-input multi-output orthogonal frequency division multiplexing system, aiming at multiple antenna received signal interference, multipath fading and additive noise problem, put forward different modulation mode based on linear programming (linear programming, LP) of the united half blind equalization and decoding algorithm.
7305 当系统采用高阶正交幅度调制时,提出了新的约束条件,保证了联合解码的正确性。 When the system is using higher-order quadrature amplitude modulation (am), puts forward a new constraint condition, ensure the validity of the joint decoding.
7306 同时利用导频符号对系统子信道进行估计,根据估计出的信道信息,分别给出了传统的Turbo接收机和基于LP的联合检测与解码的仿真结果。 System at the same time use of pilot symbols on channel estimate, according to estimate the channel information, traditional Turbo receiver is given and simulation results of joint detection and decoding based on LP.
7307 实验结果表明,在导频符号数量较少时,现有的基于信道估计信息的检测算法会出现错误地板,而所提的算法则取得了较优的误码性能。 The experimental results show that the periods of low number of pilot symbols, the existing detection algorithm based on channel estimation information can appear error floor, while the proposed algorithm has achieved a better ber performance.
7308 差分混沌键控(differential chaos shift keying,DCSK)系统的最大缺点是参考信号和数据信号消耗了相同比例的能量和数据传输速率。 Differential chaos shift keying (differential chaos shift keying, DCSK) system is one of the biggest drawback is that the reference signals and data consume the same proportion of energy and data transmission rate.
7309 为了克服这一缺点,提出了一种高速降噪的差分混沌键控(high rate noise reduction differential chaos shift keying,HRNR-DCSK)系统。 In order to overcome this defect, this paper proposes a high-speed noise reduction of differential chaos shift keying (high rate noise reduction differential chaos shift keying, HRNR - DCSK) system.
7310 该系统将数据信号扩展为多个时隙,每个时隙传输不同的数据比特,并且参考时隙的长度随着传输比特数量的增加而缩短,最后在接收端通过降低接收信号噪声的方差来提高系统的误码率(bit error rate,BER)性能。 The system to expand data signal into multiple time slots, each time slot transmission of different data bits, and the length of the reference time slot with an increase in the number of bits transferred and shorten, finally through the variance of reducing the noise of a received signal at the receiving end to improve the system BER (bit error rate and BER) performance.
7311 该方式提高了数据传输速率,降低了比特能量。 The way to improve the data transfer rate, reduces the energy.
7312 采用高斯近似法(Gaussian approximation,GA)推导出加性高斯白噪声(additive white Gaussian noise,AWGN)信道以及瑞利信道中的比特BER公式并进行仿真。 Using the Gaussian approximation (Gaussian approximation, the GA) derived additive white Gaussian noise (additive white Gaussian noise, AWGN) channel and Rayleigh channel bits of BER formula and simulation.
7313 理论分析和仿真表明:在两种信道中理论推导和仿真曲线有较好的吻合,同时HRNR-DCSK系统能有效改善系统的传输速率,在混沌通信领域具有一定的应用前景。 Theory analysis and simulation show that the theoretical derivation and simulation curve in a two channel better, at the same time HRNR - DCSK system can effectively improve the transmission rate of the system, and has certain application prospect in the field of chaotic communication.