40results about How to "Save power overhead" patented technology

A method of choosing a cache line of a plurality of cache lines of data for eviction from a frontend memory is provided. The method includes steps: assigning a baseline replacement score to each way of a plurality of ways of a cache, the ways respectively storing the cache lines; assigning a validity score to each way based on a degree of validity of the cache line stored in each way; assigning aneviction decision score to each way based on a function of the baseline replacement score for the way and the validity score for the way; and choosing a cache line of the way having a highest eviction decision score as the cache line for eviction.

The invention belongs to the technical field of modulated carrier systems, and discloses an iterative detection method for joint channel estimation in an FBMC system, which uses auxiliary pilots to eliminate interference in the first-order neighborhood, and completes the initial channel estimation value; joint iterative detection estimates outside the first-order neighborhood interference, and feed it back to correct the initial channel estimate, improve the estimation accuracy, and obtain accurate detection results. Compared with the traditional orthogonal frequency division multiplexing technology, the filter bank multi-carrier technology of the present invention does not need a cyclic prefix, and has higher frequency spectrum utilization rate, lower out-of-band interference and better synchronization robustness. Since the FBMC / OQAM system is orthogonal in the real number domain, but there is inherent imaginary part interference in the complex number domain, it brings great challenges to channel estimation. Simulation analysis results show that the algorithm proposed by the invention has fast convergence speed and high estimation precision.

The embodiment of the present invention relates to the field of wireless communication technology, and in particular to a cell reselection method, system, and device, which are used to solve the problem that when the cell reselection process in the prior art is applied to the CR system, the spectrum switching of the CR system is obviously increased. When the cell reselection of the user equipment is delayed, the power overhead of the cell reselection is increased. The method in the embodiment of the present invention includes: the user equipment receives standby frequency point information from the network side equipment, wherein the standby frequency point information includes at least one standby frequency point, and after determining that cell reselection is required, according to the standby frequency point information in the standby frequency point information Frequency point, determine the target cell; perform cell reselection according to the determined target cell. Since the network side equipment notifies the user equipment of the standby frequency point information for cell reselection during spectrum switching, so that the user equipment performs cell reselection according to the standby frequency point information, thereby reducing the frequency of idle state user equipment during spectrum switching. Cell reselection delay and power overhead of cell reselection.

The invention discloses a signal modulation method for digital television broadcasting. The method comprises: multiplexing data signals, pre-generated pilot symbols and synchronous band symbols in the frequency domain, and performing orthogonal frequency division multiplexing on the multiplexed data Use (OFDM) modulation to obtain a time-domain signal; the synchronization band symbol includes a subcarrier that transmits a synchronization symbol and a zero-set subcarrier that does not transmit any information, and the zero-set subcarrier is symmetrical on both sides of the subcarrier that transmits a synchronization symbol Distribution; the pilot symbols occupy a part of subcarriers, and the occupied subcarriers are not adjacent to each other; add a guard interval before the time domain signal, and fill in 0 in the guard interval to form an OFDM symbol; use more than one OFDM symbol and a preamble pilot signal to generate a baseband transmit signal. At the same time, the invention also discloses a signal modulation device for data television broadcasting. The modulation method provided by the invention has the characteristics of low power consumption, fast synchronization and low peak-to-average ratio.

The invention discloses an interference guiding method in a wireless local area network, mainly used for solving the problem that in existing interference management technologies, a system is low in spectrum efficiency as an interference communication transmitter is large in power overhead for sending an interference management signal. The scheme of the method comprises the following steps: 1) each access point detects and shares channel state information and data information; 2) a target communication transmitter and the interference communication transmitter respectively compute pre-coding vector and a filtering vector for sending desired signals; 3) a control center computes the pre-coding vector and the power overhead of an interference guiding signal according to the pre-coding vector and the filtering vector; and 4) the access point sends the interference guiding signal according to the pre-coding vector and the power overhead acquired in the step 3), thus achieving interference guiding. According to the method provided by the invention, interference can be eliminated, power overhead of the target communication transmitter for sending the interference guiding signal can be reduced, spectrum efficiency of the system can be improved, and thus the method can be applied to wireless communication network systems.

Determine whether the number or ratio of the number or ratio of the data that the user's device is not sent exceeds the preset threshold; if the number or ratio of the number or ratio of the data of the user device is not sent,In order to facilitate the use of the use of the data resources of the base station to obtain the use of the data resources of the user device.Examples of the present invention also disclosed an information acquisition device at the same time.

A control method of a high speed sharing indication channel power is applied in the TD-SCDMA high speed downstream grouping access system. When a high speed sharing control channel HS-SCCH dispatching is provided at present, the node B executes the following steps: (a) executing the nest step if the current transmitting time interval is provided with the HS-SCCH dispatching, but not the first TTI of the continuous dispatching set, and the current continuous dispatching set receives the high speed sharing indication channel HS-SICH upstream feedback, otherwise in the open loop state without processing the power adjustment, and finishing; (b) going into the close loop state, transmitting the power control command word of the current TTI at the downstream, and determining the power control command word of the next TTI, finishing. The invention realizes the timely and effectively control on the HS-SICH channel power in the TD-SCDMA HSDPA system, reduces the power spending as far as possible when ensuring the performance of the chain performance, obtains larger capacitance.

The present invention proposes a multicast broadcast communication-aware optical network architecture on chip and a communication method, which are used to solve the technical problems of high power consumption and poor scalability of the optical network architecture existing in the prior art, and the communication method The existing technical problems of delay and power consumption are large. In the optical network architecture, the processor modules are divided into clusters arranged in arrays. Each cluster contains an array composed of 2×4 processor modules. Each The processor module is coupled and connected to a first active microring resonator through a coupling port, and the clusters arranged in the array are connected through a serpentine optical waveguide structure and expanded in units of clusters. At the same time, the first active microring resonator and The coupling distance distribution between optical waveguides is set by the power split system principle. In the communication method, the global control unit processes the communication request of the processor module, and sends the obtained control information to the multi-wavelength laser source and the first active microring resonator for network communication configuration.