5 results about "Phase quantization" patented technology

Systems, methods, and instrumentalities may be configured for two-level reconfigurable intelligent surface (RIS) channel state information (CSI). A wireless transmit / receive unit may receive a first set of symbols. The WTRU may determine a first RIS CSI based on the first set of symbols, a first RIS CSI estimation matrix, and a first RIS CSI quantization format. The first RIS CSI quantization format may use a uniform distribution of phase quantization points. The WTRU may transmit the first RIS CSI. The WTRU may receive a second set of symbols. The WTRU may determine a second RIS CSI based on the second set of symbols, a second RIS CSI estimation matrix, and a second RIS CSI quantization format. The second RIS CSI quantization format may use a non-uniform distribution of phase quantization points. The WTRU may transmit the second RIS CSI.

This invention relates to the field of data transmission technology, specifically to a polarization-selectable variable phase quantization precision reflective array antenna element, antenna, and system. The polarization-selectable variable phase quantization precision reflective array antenna element includes: a reconfigurable resonant structure with four radiating arms; four controllable switches, each disposed on one of the four radiating arms; and a control circuit for independently controlling the on / off state of each controllable switch. By configuring the on / off state combinations of the four controllable switches, switching between co-polarized and cross-polarized reflection modes is possible, and phase modulation with variable phase quantization precision is supported in both polarization modes. This solution, by setting controllable switches on the four radiating arms of the same reconfigurable resonant structure and employing a specific on / off state encoding strategy, achieves a high degree of integration of co-polarized and cross-polarized dual-mode response and 1-bit and 2-bit variable phase modulation functions, overcoming the technical bottleneck that the number of operating modes is positively correlated with the complexity of the element structure.

The application relates to a method and device for tracking an ultra-wideband navigation signal based on a linear frequency modulation spread code, and belongs to the technical field of satellite navigation. The method comprises the following steps: receiving an ultra-wideband navigation signal and multiplying the signal with a local in-phase carrier and a local quadrature carrier respectively to obtain in-phase components and quadrature components; obtaining a local linear frequency modulation spread code which is output after being bound by phase calculation, phase quantization, code generation and signal transmission time delay; obtaining a local pseudo-random spread code which is output after being bound by signal transmission time delay; combining the two types of spread codes to generate three types of spread codes, namely delayed, instant and advanced spread codes, and performing coherent integration on the in-phase components and the quadrature components which are divided into three paths; calculating the phase error and the time delay error of the current received signal and the local carrier according to the coherent integration result; and finally, repeatedly generating the carrier and the two types of spread codes based on error feedback to cyclically realize the tracking of the ultra-wideband navigation signal. The method can reduce the complexity of tracking the ultra-wideband navigation signal.

This invention discloses a method for accelerating inference of multimodal large models based on KV Cache low-bit quantization, relating to the fields of artificial intelligence and deep learning. The method includes: a pre-filling stage, in which a subspace is constructed by querying the singular value decomposition of the tensor; iterative quantization with orthogonal constraints applied to the key tensor, and token-by-token quantization of the value tensor, both compressed to 2 bits; treating the weights as complex numbers, and quantizing the phase to the fourth root of unity; inference, layer normalization of the visual encoder is fused; in the decoding stage, token-by-token generation is performed, key-value quantization is carried out in real time and stored in the cache, and attention calculation is completed by combining the history. This invention can significantly reduce memory usage, improve inference throughput, fully utilize the 2-bit storage space, maintain model accuracy, and eliminate the need for additional fine-tuning or calibration data.

Methods, systems, and devices for wireless communications are described. The described techniques may enable a user equipment (UE) to allocate bits of a phase quantization based on a relative gain increase of each of a set of amplitude values. For example, the UE may identify a gain matrix that defines a gain associated with allocating quantities of bits to each amplitude value. The UE may accordingly determine, for each bit of the phase quantization, a respective amplitude value to which the UE may allocate the bit. In some examples, the UE may be configured with multiple gain matrices associated with gain increases for multiple respective noise and source distributions. The UE may therefore select the gain matrix from the multiple configured gain matrices based on one or more noise measurements of the channel.