公开(公告)号：WO2004002046A2

公开(公告)日：2003-12-31

申请号：PCT/US2003/013836

申请日：2003-05-05

Applicant: SANDBRIDGE TECHNOLOGIES, INC.

Inventor： CHUN, Joon-Hwa

IPC: H04L1/00

CPC classification number: H04L1/0071 ,  H03M13/271

Abstract: A method of performing interleaving or deinterleaving in a communication system having at least one interleaver at the transmitter and at least one deinterleaver at the receiver. The method includes interleaving or deinterleaving the input bit sequence χ n as follows: γ n = χ π n , n = 0,...,N-1, using a bridge function between π n and n, n = 0,...,N-1, based on a spline linear model. When the system includes a first and a second interleaving or deinterleaving, the method is performed for both. When the second interleaving or deinterleaving includes adding padding bits, the location in the interleaved or deinterleaved bit sequence of the padding bits is determined and interleaving or deinterleaving for the determined locations is skipped.

Abstract translation: 一种在具有在发射机处的至少一个交织器的通信系统中执行交织或解交织的方法，以及在接收机处的至少一个解交织器。 该方法包括以下操作对输入比特序列chi进行交织或解交织：γn = chi pi n，n = 0，...，N-1，使用pi n和n之间的桥函数，n = 0，... 。，N-1，基于样条线性模型。 当系统包括第一和第二交织或解交织时，两者都执行该方法。 当第二交织或解交织包括添加填充比特时，确定填充比特的交织或解交织的比特序列中的位置，并跳过所确定的位置的交织或解交织。

公开(公告)号：WO2006036405A2

公开(公告)日：2006-04-06

申请号：PCT/US2005/030195

申请日：2005-08-25

Applicant: SANDBRIDGE TECHNOLOGIES, INC.

Inventor： SANDBRIDGE TECHNOLOGIES, INC. ,  CHUN, Joon-Hwa

IPC: H04L12/56

CPC classification number: H04B1/70755 ,  H04B1/7075

Abstract: A method of determining an acquisition indicator bit AI s , at a receiver in a communication system which includes receiving multiplexed acquisition indicator bits y = B x AI + n, where B is the signature matrix known at both base station and UE, AI is all the acquisition indicator bits and n represents noise. Next, an estimated value of the acquisition indicator bit AÎ MMSE (s) as a function of formula (I) is calculated, where B T (s,.) is the s -th row vector of the transposed matrix B T for acquisition indicator bit AI s ,. Finally, the acquisition indicator bit AI S is set as follows: AI s. =-1, if AÎ MMSE (s) S =0, if R ≤ AÎ, MMSE SE (s) s =1, if AÎ MMSE (s) ≥ U, where R and U are decision thresholds.

Abstract translation: 一种确定采集指示符位AI

公开(公告)号：WO2004054115A1

公开(公告)日：2004-06-24

申请号：PCT/US2003/033584

申请日：2003-10-23

Applicant: SANDBRIDGE TECHNOLOGIES, INC.

Inventor： LU, Jin ,  CHUN, Joon-Hwa ,  HOKENEK, Erdem ,  MOUDGILL, Mayan

IPC: H03M13/45

CPC classification number: H03M13/3927 ,  H03M13/296 ,  H03M13/6561 ,  H04L1/005 ,  H04L1/0066

Abstract: A method of decoding using a log posterior probability ratio L(u k ), which is a function of forward variable α (.) and backward variable β (.) . The method comprises dividing the forward variable α (.) and the backward variable β (.) into, for example, two segments p and q , where p plus q equal the length of the code word U . The forward segments α (.) are parallel calculated, and the backward segments ,β (.) are parallel calculated. The ratio L(u k ) is calculated using the parallel calculated segments of α (.) and β (.).

Abstract translation: 使用对数后验概率比L（uk）进行解码的方法，其是前向变量α（。）和向后变量β（。）的函数。 该方法包括将前向变量α（。）和反向变量β（。）分成例如两个段p和q，其中p + q等于代码字U的长度。前向段α（。） 并行计算，并且计算后向段β（。）。 使用α（。）和β（。）的平行计算段计算比率L（uk）。

公开(公告)号：WO2004006612A1

公开(公告)日：2004-01-15

申请号：PCT/US2003/013837

申请日：2003-05-05

Applicant: SANDBRIDGE TECHNOLOGIES, INC.

Inventor： CHUN, Joon-Hwa

IPC: H04Q7/38

CPC classification number: H04B1/7075

Abstract: A method of determining an acquisition indicator bit AI s at a receiver in a communication system which includes receiving multiplexed acquisition indicator bits y = B x AI + n , where B is the signature matrix known at both base station and the receiver, is all the acquisition indicator bits and n represents noise. Next, an estimated value of the acquisition indicator bit AÎ ML (s) as a function of formula (I) is calculated, where B T (s,.) is the s -th row vector of the transposed matrix B T for acquisition indicator bit AI s . Finally, the acquisition indicator bit AI s is set as follows: AI s = -1, if AÎ ML ( s) R AI s = 0, if R ≤ AÎ ML ( s ) U AI s = 1, if AÎ ML ( s) ≥ U , where R and U are decision thresholds.

Abstract translation: 一种在通信系统中的接收机处确定采集指示符位AI的方法，包括接收多路复用获取指示符位y = B x AI + n，其中B是基站和接收机都已知的签名矩阵，全部是采集 指示符位，n表示噪声。 接下来，计算作为公式（I）的函数的获取指示符位A∈M的估计值，其中B（S，））是转置矩阵B 的第s行向量， 用于采集指示位AI。 最后，采集指示位AI设置如下：AIs = -1，如果AλML（s） = U ，其中R和U是决策阈值。