Concatenation of an inner code and an outer code may provide a high coding gain and the capacity of a long code to correct errors.
级联码是将两个或多个单码级联，在不增加译码复杂度的情况下，可以得到高的编码增益，达到与长码相同的纠错能力。
It describes the principle of status table production, the inquiring process of status table and long code production algorithm in detail.
详细描述了状态表生成原理、状态表查询过程以及基于该方法的长码生成算法。
The method used a parity-check matrix of a short LDPC code as its mother matrix upon which a long code was constructed with circulant permutation matrices.
该方法利用一个短的LDPC码的校验矩阵作为其母矩阵，在此基础上采用循环置换矩阵构造一个长的LDPC码。
According to P-code features of large Doppler frequency shift and long code period, the method that shortens the scope of carrier frequency search is studied.
针对P码多普勒频移大、周期长的特点，本文探讨了缩短载频搜索范围的方法。
A new code acquisition method based on phase difference correction of FFT is presented to solve the problem of long code acquisition time in high dynamic DSSS receivers having large frequency offset.
针对大频偏下高动态直扩接收机伪码捕获时间长的问题，提出了一种新的基于FFT相位精确估计频偏的改进方法。
LDPC check matrix function claims that can be generated in accordance with the corresponding distribution check matrix, for a very long code length LDPC.
LDPC码校验矩阵声称函数，可以根据度分布生成相应的校验矩阵，适用于码长很长的LDPC。
Aiming at the question on rapid search for long code, a rapid search strategy of long code is proposed, which expands the search scope of pseudorandom code adopting expansion and average technologies.
针对长周期伪码的快速搜索问题，提出一种通过扩展均值处理技术扩大伪码搜索范围的长码快速搜索策略。
In this paper, a blind despreading algorithm is proposed for the synchronous multi-user long-code Direct Sequence spread Spectrum (DS-SS) signals in low signal to Noise Ratio (SNR) scenarios.
针对同步多用户长码直扩信号，该文提出了一种低信噪比条件下的盲解扩算法。
Two new methods are developed for blind estimation for long-code chaotic spread spectrum sequence.
针对长码实值混沌直扩系统，提出了两种盲解扩算法。
In this paper, a low-complexity blind channel estimation technique is proposed for long-code MIMO CDMA systems.
该文提出一种用于多输入多输出CD MA系统的信道快速盲估计方法。
In this paper, a low-complexity blind channel estimation technique is proposed for long-code MIMO CDMA systems.
该文提出一种用于多输入多输出CD MA系统的信道快速盲估计方法。
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