EDMG STF Field Configuration for Low PAPR in Bonded WLAN Channels
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Solution Overview
Problem
Current wireless LAN systems face challenges in achieving low Peak to Average Power Ratio (PAPR) when transmitting OFDM packets through multiple bonded channels, which affects signal transmission efficiency and reliability.
Innovation Solution
The configuration of an Enhanced Directional Multi Gigabit (EDMG) Short Training Field (STF) field for OFDM packets, using specific sequences and weights, is proposed to transmit and receive signals through four bonded channels, ensuring orthogonality and minimizing PAPR.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If OFDM packets are transmitted through multiple bonded channels, then transmission bandwidth is increased, but Peak to Average Power Ratio (PAPR) increases
Solution Approach 1:
The patent segments the EDMG STF field into multiple sequences corresponding to different space-time streams, where each sequence is independently configured with specific patterns (e.g., {A, 0, 0, 0, B} format). This segmentation allows each stream to be optimized separately for low PAPR while collectively providing wide bandwidth transmission through channel bonding.
Solution Approach 2:
The patent changes the parameters of the training field sequences by configuring specific patterns (A and B sequences of length 804), applying orthogonal transformations, and using zero-padding techniques. These parameter changes ensure that the sequences maintain low PAPR characteristics while supporting multiple bonded channels for increased bandwidth.
2Productivity
If channel bonding is used to increase transmission rate, then productivity is improved, but signal complexity increases
Solution Approach 1:
The patent employs periodic repetition of specific sequence patterns (A and B) within the EDMG STF field, where sequences are repeated with predetermined weights and orthogonal relationships. This periodic structure simplifies the generation and processing of signals across multiple bonded channels, reducing complexity while maintaining high transmission rates.
Solution Approach 2:
The patent uses copying techniques by replicating orthogonal sequences across different space-time streams and channels. The same basic sequence patterns (A and B) are copied and transformed with different weights and orthogonal relationships, allowing complex multi-channel transmission to be built from simple, reusable building blocks.
Data Source
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AI summary
Disclosed are a method for a station for transmitting and receiving a signal in a wireless local area network (WLAN) system, and an apparatus for the method. More specifically, disclosed are a method for transmitting and receiving a signal and an apparatus for the method, the method, when a station transmits and receives a signal by means of a channel in which four channels have been bonded, generating an enhanced directional multi gigabit (EDMG) short training field (STF) for an orthogonal frequency division multiplexing (OFDM) packet, and transmitting and receiving a signal comprising the generated EDMG STF field.