Scrambled Data Communication for Secure Multiplexing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing data communication techniques, such as CDMA, are vulnerable to brute force attacks and interference due to detectable signals, and lack effective methods for secure and efficient multiplexing of data over shared mediums.
Innovation Solution
The implementation of a scrambling algorithm to modulate and descramble data signals, allowing for secure transmission and reception of data over shared mediums, using a predetermined scrambling algorithm to transform signals into a scrambled form that resembles white noise, which can only be recovered with the correct descrambling sequence, thereby enhancing security and multiplexing capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If direct carrier modulation is used for data transmission, then the transmission process is simple, but the signal becomes detectable and vulnerable to brute force attacks
Solution Approach 1:
The patent applies preliminary action by scrambling the data signal before modulation and transmission. The scrambler processes the input data sequence to produce a scrambled sequence that is then modulated onto the carrier wave. This preliminary scrambling ensures that even if the modulated signal is intercepted, the underlying data remains concealed without requiring complex encryption algorithms during transmission.
2Productivity
If multiple signals are transmitted simultaneously over the same medium using the same frequency, then spectrum efficiency is improved, but signal interference occurs
Solution Approach 1:
The patent applies segmentation by dividing the shared communication medium into multiple logical channels through code-based segmentation. Each user's signal is segmented with a unique scrambling code, allowing multiple signals to occupy the same frequency spectrum simultaneously without interference. The receiver segments the composite signal by applying the appropriate scrambling code to extract the desired signal while treating other signals as uncorrelated noise.
3Object-generated harmful factors
If scrambling is applied to multiple signals for multiplexing, then interference between signals is reduced, but system complexity increases
Solution Approach 1:
The patent applies parameter changes by modifying the temporal characteristics of signals through scrambling codes. Instead of changing frequency or time slots, the system changes the code sequence parameters that define each signal's structure. This allows multiple signals to be distinguished through code correlation properties rather than requiring complex frequency or time management, thereby reducing overall system complexity while eliminating interference.
Data Source
AI summary
The subject matter described herein includes methods, systems, and computer readable medium for scrambled communication of data to, from, or over a medium. According to one aspect, the subject matter described herein includes a method for communicating data in scrambled form to or over a medium. The method includes receiving analog or digital data to be transmitted to or over a medium. The method further includes modulating samples representing at least signal using the analog or digital data to produce data modulated signal samples. The method further includes scrambling the data modulated signal samples using a predetermined scrambling algorithm. The method further includes transmitting the scrambled data modulated signal samples to or over the medium. The method further includes descrambling samples received from the medium using the inverse of the predetermined scrambling algorithm to obtain the unscrambled modulated signal samples, which can then be demodulated to retrieve original data.