Golay Sequence Length Extension for Millimeter-Wave Channel Estimation
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Solution Overview
Problem
Current wireless communication systems in the millimeter-wave band face challenges in efficiently communicating channel estimation fields, particularly with Golay sequences, which are essential for accurate channel estimation and data transmission at high speeds.
Innovation Solution
The implementation of Golay sequences with extended lengths, such as 384 and 256 chips, in the Channel Estimation Field (CEF) to support higher channel bandwidths and multiple-input multiple-output (MIMO) transmissions, enabling efficient channel estimation in both time and frequency domains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If Golay sequences with extended lengths (384 and 256 chips) are implemented in the Channel Estimation Field, then channel estimation accuracy and data transmission rates are improved, but sequence length and processing complexity increase
Solution Approach 1:
The patent changes the parameter of Golay sequence length from traditional values to extended lengths of 384 and 256 chips. This parameter change enables support for higher channel bandwidths (6.48 GHz and above) and MIMO transmissions while maintaining complementary autocorrelation properties essential for accurate channel estimation in both time and frequency domains
2Productivity
If higher channel bandwidths and MIMO transmissions are supported, then data transmission rates increase up to 30 Gbps, but the complexity of maintaining resolution and duration in the frequency domain increases
Solution Approach 1:
The patent adjusts the Golay sequence length parameter to specific extended values (384 and 256 chips) that are mathematically designed to maintain proper resolution and duration characteristics in the frequency domain. This allows the system to support higher bandwidths and MIMO while preserving the complementary autocorrelation properties needed for accurate channel estimation
Solution Approach 2:
The patent provides flexible sequence length options (384 chips for higher bandwidths, 256 chips for MIMO transmissions) that can be dynamically selected based on the specific transmission requirements. This dynamic adaptation allows the system to optimize performance for different operating conditions without requiring a single fixed complex structure
Data Source
AI summary
Some demonstrative embodiments include apparatuses, devices, systems and methods of communicating a channel estimation field with Golay Sequences. For example, an apparatus may include logic and circuitry configured to cause a wireless station to determine a first sequence having a length of 1536 based on a first combination of a pair of Golay sequences, each Golay sequence of the pair of Golay sequences having a length of 384; to determine a second sequence having a length of 1536 based on a second combination of the pair of Golay sequences; and to transmit an Enhanced Directional Multi-Gigabit (EDMG) Physical Layer Convergence Protocol (PLCP) Protocol Data Unit (PPDU) over a channel in a frequency band above 45 Ghz, the EDMG PPDU including an EDMG Channel Estimation Field (CEF) including the first sequence followed by the second sequence, the channel having a channel bandwidth of 6.48 GHz or an integer multiple of 6.48 GHz.