Abstract:
PSC 및 SSC에 대한 공통적인 부분 상관을 이용하는 광대역 CDMA 셀 탐색기 및 그 방법이 개시된다. 상기 광대역 CDMA의 셀 탐색기는, PSC/SSC 코드에 공통적으로 사용될 수 있는 부분 상관값들을 PSC/SSC 상관기에서 계산하여 소정 메모리에 저장하고, 이를 재사용하는 방법을 통하여, 하나의 상관기에 의하여 PSC 및 SSC 코드에 대하여 동시에 상관을 수행하는 파이프라인 구조를 채택하였다.
Abstract:
A method for obtaining space and time diversity gains and a system thereof are provided to measure signal strengths of plural received multi-path signals for a primary pilot channel by assigning generalization codes as 0, as measuring signal strengths of the multi-path signals for a secondary pilot channel by assigning the generalization codes as non-zero values. Generalization codes of at least one pilot channel are modified to measure signal strengths of each of plural received multi-path signals. Portions of the received multi-path signals are combined on the basis of the measured signal strengths. SNRs(Signal to Noise Ratios) of the received multi-path signals are measured. The signal strengths of the multi-path signals for a primary pilot channel are measured by assigning the generalization codes as 0.
Abstract:
Wireless devices, transmitters, systems and methods are provided that have a narrow band signaling channel and a wide band channel, for example an OFDM channel. In order to save power, the wireless device is nominally powered down with the exception of a receiver specific to the narrow band signaling channel. Once instructed to do so over the narrow band signaling channel, the wireless device wakes up the rest of its wide band receive circuitry.
Abstract:
Wireless devices, transmitters, systems and methods are provided that have a narrow band signaling channel and a wide band channel, for example an OFDM channel. In order to save power, the wireless device is nominally powered down with the exception of a receiver specific to the narrow band signaling channel. Once instructed to do so over the narrow band signaling channel, the wireless device wakes up the rest of its wide band receive circuitry.
Abstract:
Certain aspects of a method and system for achieving space and time diversity gain are disclosed. Aspects of one method may include modifying a generalization code of at least one pilot channel, to measure signal strengths for each of a plurality of received multipath signals. A portion of the plurality of received multipath signals may be combined based on the measured signal strengths. The signal strengths of the plurality of received multipath signals may be measured on a primary pilot channel by assigning its generalization code to zero. The signal strengths of the plurality of received multipath signals on a secondary pilot channel may measured by assigning its generalization code to a non-zero value.
Abstract:
Wireless devices, transmitters, systems and methods are provided that have a narrow band signaling channel and a wide band channel, for example an OFDM channel. In order to save power, the wireless device is nominally powered down with the exception of a receiver specific to the narrow band signaling channel. Once instructed to do so over the narrow band signaling channel, the wireless device wakes up the rest of its wide band receive circuitry.
Abstract:
Wireless devices, transmitters, systems and methods are provided that have a narrow band signalling channel and a wide band channel, for example an OFDM channel. In order to save power, the wireless device is nominally powered down with the exception of a receiver specific to the narrow band signalling channel. Once instructed to do so over the narrow band signalling channel, the wireless device wakes up the rest of its wide band receive circuitry.
Abstract:
This invention relates to a method and an apparatus for code activation, and a computer program and a storage medium thereof. A combined channel impulse response for each code is calculated based on a channelization code, a scrambling code and a channel impulse response corresponding to the code; a statistical result of the correlations between each interference code and all user codes is obtained; an active interference code number is determined; the determined number of interference codes, are activated, wherein a selection of which interference codes to activate is based on the statistical result. In some embodiments of this invention, the interference codes having a close correlation with the user codes may be selected to be activated, thereby the performance of joint detection is improved. In some embodiments of this invention, the complexity of the subsequent joint detection will be remarkably reduced on the premise of ensuring the performance of the joint detection.
Abstract:
A method of transceiving data includes providing a wireless transceiver chip that supports multiple wireless standards for transceiving data packets, wherein a first wireless standard comprises a first modulation and demodulation scheme, and wherein a second wireless standard comprises a second modulation and demodulation scheme, and wherein the first modulation and demodulation scheme is incompatible with the second modulation and demodulation scheme; activating only one PHY layer of the wireless transceiver chip during the transceiving of the data packets; using a MAC layer of the wireless transceiver chip to specify whether the first or second wireless standard is to be used for a given transceiving of the data packets; and the PHY layer receiving instructions from the MAC layer regarding which wireless standard is to be used for the transceiving of the data packets using hardware that is shared by the PHY layer corresponding to both wireless standards.
Abstract:
Certain aspects of a method and system for achieving space and time diversity gain are disclosed. Aspects of one method may include modifying a generalization code of at least one pilot channel, to measure signal strengths for each of a plurality of received multipath signals. A portion of the plurality of received multipath signals may be combined based on the measured signal strengths. The signal strengths of the plurality of received multipath signals may be measured on a primary pilot channel by assigning its generalization code to zero. The signal strengths of the plurality of received multipath signals on a secondary pilot channel may measured by assigning its generalization code to a non-zero value.