PCINR Computation via Pilot Signal Segmentation
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Solution Overview
Problem
Current wireless communication systems face challenges in accurately computing the physical carrier to interference-plus-noise ratio (PCINR), which is crucial for adjusting system parameters to ensure high data rate wireless access with quality of service, as existing methods fail to represent channel conditions accurately.
Innovation Solution
The techniques involve computing the PCINR by estimating signal and interference-plus-noise power from received wireless transmission frames and pilot signals, using vectors and algorithms to adjust system parameters such as modulation and coding modes, and beamforming weights, enabling devices to transmit PCINR values for parameter adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional PCINR computation methods are used, then system operation continues, but measurement precision is insufficient to accurately represent channel conditions
Solution Approach 1:
The received signal is segmented into distinct components: pilot signals, data signals, and interference-plus-noise. The patent separately processes pilot signals to estimate channel response, then uses this to isolate and measure interference-plus-noise power independently from desired signal power, enabling accurate PCINR computation without requiring complex joint estimation of all components simultaneously
Solution Approach 2:
Pilot signals serve as an intermediary element that enables indirect measurement of channel conditions. By inserting known pilot signals into the transmission, the receiver can use these as reference points to estimate channel response and separately measure interference-plus-noise power, avoiding the need to directly measure the composite signal in a complex manner
2Reliability
If PCINR computation is improved for accurate channel representation, then system parameter adjustments can be optimized, but computation time and processing requirements increase
Solution Approach 1:
Pilot signals are embedded in advance within the transmitted signal frames before data transmission. This preliminary inclusion of known reference signals allows the receiver to perform channel estimation and interference measurement in a systematic manner, reducing computation time compared to attempting to estimate all parameters from raw data signals alone
Data Source
AI summary
Techniques are provided to compute the physical carrier to interference-plus-noise ratio (PCINR) in a wireless communication system. In one embodiment, the PCINR is computed from received signals in active subcarriers in a preamble of a wireless transmission frame. In another embodiment, the PCINR is computed from a block of contiguous subcarriers in a symbol of received wireless transmission. The PCINR may be used to adjust a system parameter associated with wireless communication between wireless communication devices.