Zhenghao Zhang from Tallahassee, FL, age 45

Zcnet - Low Power Wide Area Network (Lpwan) Code Division Multiplexing (Cdm) And Modulation System, Process, Computer Program Product, And Circuitry
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US Patent:

20220393917, Dec 8, 2022
Filed:

Aug 15, 2022
Appl. No.:

17/888464
Inventors:

- Tallahassee FL, US
Zhenghao ZHANG - Tallahassee FL, US
International Classification:

H04L 27/12
H04L 12/28
H04J 13/00
H04W 48/12
Abstract:

A novel LPWAN technology includes a ZCNET node that transmit signals that occupy a very small fraction of the signal space, resulting in very low collision probabilities. ZCNET supports parallel root channels within a single frequency channel by using Zadoff-Chu (ZC) root sequences. The root channels do not severely interfere with each other, because the interference power is spread evenly over the entire signal space. ZCNET has its node randomly choose the transmission channel and range, while still achieving high packet receiving ratios such as 0.9 or above, because the load in each root channel is small.

Zcnet - Low Power Wide Area Network (Lpwan) Code Division Multiplexing (Cdm) And Modulation System, Process, Computer Program Product, And Circuitry
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US Patent:

20200389343, Dec 10, 2020
Filed:

Jun 8, 2020
Appl. No.:

16/894912
Inventors:

- Tallahassee FL, US
Zhenghao ZHANG - Tallahassee FL, US
Assignee:

The Florida State University Research Foundation, Inc. - Tallahassee FL
International Classification:

H04L 27/12
H04W 48/12
H04J 13/00
H04L 12/28
Abstract:

A novel LPWAN technology includes a ZCNET node that transmit signals that occupy a very small fraction of the signal space, resulting in very low collision probabilities. ZCNET supports parallel root channels within a single frequency channel by using Zadoff-Chu (ZC) root sequences. The root channels do not severely interfere with each other, because the interference power is spread evenly over the entire signal space. ZCNET has its node randomly choose the transmission channel and range, while still achieving high packet receiving ratios such as 0.9 or above, because the load in each root channel is small.

Physical Random Access Channel Scheme For Wireless Networks Using An Analog Bloom Filter
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US Patent:

20190357259, Nov 21, 2019
Filed:

May 15, 2019
Appl. No.:

16/413178
Inventors:

- Tallahassee FL, US
Zhenghao Zhang - Tallahassee FL, US
Assignee:

The Florida State University Research Foundation, Inc. - Tallahassee FL
International Classification:

H04W 74/08
Abstract:

This disclosure describes a novel PRACH scheme based on an Analog Bloom Filter, in which user equipment is allowed to transmit multiple sequences to a base station, instead of only one sequence as is the case with the current LTE. A new decoding algorithm is disclosed, which copes with the unique challenges in the signal generated with ZC sequences, such as peak shifting and multiple peaks. In addition, when CFO can be removed the new scheme allows the UE to piggyback log 7 bits of information along with the signal. Evaluation shows that the new scheme outperforms the existing PRACH of LTE by more than an order of magnitude in many cases, and therefore is a good candidate as the PRACH for future wireless networks (e.g., 5G).