公开(公告)号：WO2003017527A3

公开(公告)日：2003-02-27

申请号：PCT/US2002/026449

申请日：2002-08-20

Applicant: QUALCOMM INCORPORATED

Inventor： SHIU, Da-shan ,  WILLENEGGER, Serge ,  CHI, Richard ,  SUBRAHMANYA, Parvathanathan ,  HSU, Chih-Ping

IPC: H04B7/005

Abstract: Techniques to more efficiently control the transmit power for a data transmission that uses a number of formats (e.g., rates, transport formats). Different formats for a given data channel (e.g., transport channel) may require different target SNIRs to achieved a particular BLER. In one aspect, individual target BLER may be specified for each format of each data channel. In another aspect, various power control schemes are provided to achieve different target SNIRs for different formats. In a first power control scheme, multiple individual outer loops are maintained for multiple formats. For each format, its associated outer loop attempts to set the target SNIR such that the target BLER specified for that format is achieved. In a second power control scheme, multiple individual outer loops are maintained and the base station further applies different adjustments to the transmit power levels for different formats.

公开(公告)号：WO2003017527A2

公开(公告)日：2003-02-27

申请号：PCT/US2002/026449

申请日：2002-08-20

Applicant: QUALCOMM INCORPORATED

Inventor： SHIU, Da-shan ,  WILLENEGGER, Serge ,  CHI, Richard ,  SUBRAHMANYA, Parvathanathan ,  HSU, Chih-Ping

IPC: H04B7/005

CPC classification number: H04W52/12 ,  H04W52/20 ,  H04W52/267 ,  H04W52/283 ,  H04W52/286 ,  H04W52/44

Abstract: Techniques to more efficiently control the transmit power for a data transmission that uses a number of formats (e.g., rates, transport formats). Different formats for a given data channel (e.g., transport channel) may require different target SNIRs to achieved a particular BLER. In one aspect, individual target BLER may be specified for each format of each data channel. In another aspect, various power control schemes are provided to achieve different target SNIRs for different formats. In a first power control scheme, multiple individual outer loops are maintained for multiple formats. For each format, its associated outer loop attempts to set the target SNIR such that the target BLER specified for that format is achieved. In a second power control scheme, multiple individual outer loops are maintained and the base station further applies different adjustments to the transmit power levels for different formats.

Abstract translation: 用于更有效地控制使用多种格式（例如，速率，传输格式）的数据传输的传输功率的技术。 给定数据信道（例如传输信道）的不同格式可能需要不同的目标SNIR来实现特定的BLER。 在一个方面，可以为每个数据信道的每个格式指定单独的目标BLER。 另一方面，提供各种功率控制方案以针对不同格式实现不同的目标SNIR。 在第一种功率控制方案中，针对多种格式维持多个单独的外部回路。 对于每种格式，其关联的外部循环尝试设置目标SNIR，从而实现为该格式指定的目标BLER。 在第二种功率控制方案中，维持多个单独的外环，并且基站对不同格式的发射功率电平进行不同调整。

公开(公告)号：WO2002076010A2

公开(公告)日：2002-09-26

申请号：PCT/US2002/007692

申请日：2002-03-15

Applicant: QUALCOMM INCORPORATED

Inventor： CHI, Richard ,  KRISHNAN, Ranganathan ,  AGRAWAL, Avneesh ,  JOOTAR, Jittra

IPC: H04L7/04

CPC classification number: H04L7/042

Abstract: A received symbol stream is oversampled and correlated with a known sync word to determine the correlation properties of the oversampled signal with a known sync word. A linear filter, such as a moving average window filter, is convolved with the correlation signal to generate a convolution signal. Once the convolution signal has reached a predetermined threshold, it is scanned over a predetermined window of oversamples. If the convolution signal exceeds the threshold for the window of oversamples, the sync word has been found and the symbol stream is down-sampled at intervals that depend on the data rate of the symbol stream. This down-sampling process may be done by picking the center oversample corresponding to each information symbol given the timing alignment, or by doing a majority vote over a multiple number of samples centered around the center oversample.

Abstract translation: 接收到的符号流被过采样并与已知同步字相关，以确定过采样信号与已知同步字的相关特性。 诸如移动平均窗口滤波器的线性滤波器与相关信号进行卷积以产生卷积信号。 一旦卷积信号已经达到预定的阈值，就会在预定的过采样窗口上扫描。 如果卷积信号超过过采样窗口的阈值，则已经找到同步字，并且以取决于符号流的数据速率的间隔对符号流进行下采样。 这种下采样过程可以通过选择对应于给定时序对准的每个信息符号的中心过采样来完成，或者通过以围绕中心过采样为中心的多个采样进行多数投票。

公开(公告)号：WO2002060083A2

公开(公告)日：2002-08-01

申请号：PCT/US2002/001799

申请日：2002-01-17

Applicant: QUALCOMM INCORPORATED

Inventor： CHI, Richard ,  SHIU, Da-Shan

IPC: H04B1/707

CPC classification number: H04B1/7103 ,  H04B2201/70705 ,  H04L25/0262 ,  H04L25/03171

Abstract: Techniques for detecting received sequences when certain signaling characteristics (e.g., transport formats, rates) are not known a priori at the receiver. In one method, a sequence for a transmitted message is received, and a metric value is computed for each of a number of hypothesized messages corresponding to a number of hypotheses for the unknown signaling characteristic of the transmitted message. The metric value is computed based on a MAP metric derived to approximately maximize a joint a posteriori probability between the received sequence and the hypothesized messages. The hypothesized message having the best metric value is selected as the transmitted message. The specific form of the MAP metric is dependent on the particular signaling scheme used to map the message to its corresponding sequence, and may be used for blind transport format detection (BTFD) in a W-CDMA system and blind rate detection in an IS-95 CDMA system.

Abstract translation: 当某些信令特征（例如，传输格式，速率）在接收机处不知道时，用于检测接收到的序列的技术。 在一种方法中，接收用于发送的消息的序列，并且针对与发送的消息的未知信令特性的假设数量相对应的多个假设消息中的每一个计算度量值。 基于导出的MAP度量计算度量值，以近似地使接收到的序列与假设消息之间的联合后验概率最大化。 选择具有最佳度量值的假设消息作为发送消息。 MAP度量的具体形式取决于用于将消息映射到其对应序列的特定信令方案，并且可以用于W-CDMA系统中的盲传输格式检测（BTFD），并且在IS- 95 CDMA系统。