MIMO-CDMA Transceiver With Space-Time Block Coding
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Solution Overview
Problem
Current MIMO-CDMA wireless communication equipment lacks dynamic flexibility and power efficiency, and existing design verification methods are inefficient in ensuring algorithm correctness.
Innovation Solution
The proposed MIMO-CDMA wireless communication equipment employs a transmitter and receiver architecture with QPSK modulation, space-time block coding, and cyclic prefix to achieve dynamic flexibility and power efficiency, along with a pre-verifying method that simulates data frame transmission and compares simulation parameters with hardware echo signals to adjust and convert algorithms into hardware programming language.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional MIMO-CDMA wireless communication equipment is used, then basic communication function is provided, but dynamic flexibility and power efficiency are insufficient
Solution Approach 1:
The patent implements dynamic flexibility through the space-time block coding module that can adaptively adjust coding parameters based on channel conditions, and the receiver estimation module that dynamically estimates time parameters, frequency parameters, and channel parameters. This allows the system to flexibly adapt to changing communication environments while maintaining power efficiency through optimized signal processing.
2Productivity
If algorithm verification is performed through traditional methods, then hardware implementation can be achieved, but verification efficiency and correctness are insufficient
Solution Approach 1:
The patent creates a simulation system that copies the hardware implementation logic into a software-based simulation environment. The simulation module generates simulation parameters that mirror the hardware's expected behavior, allowing virtual verification of the transceiver algorithm before hardware deployment. This copying approach enables rapid iteration and correctness verification without requiring physical hardware for each test case.
Solution Approach 2:
The patent implements a feedback mechanism where the simulation system compares simulation parameters against actual hardware echo signal parameters. This feedback loop identifies discrepancies between simulated and actual performance, allowing the algorithm to be adjusted and refined before final hardware implementation, thereby improving both verification efficiency and reliability.
Data Source
AI summary
A multiple-input multiple-output code division multiple access (MIMO-CDMA) wireless communication equipment has a transmitter and a receiver. The transmitter has an encoder for receiving and encoding a plurality of data, and sending the data to a quadrature phase-shift keying (QPSK) unit. The QPSK unit conducts QPSK modulating to an output of the encoder and sends it to a space-time block coding (STBC) unit or a space multiplexer to process space-time coding or space coding. A plurality of data frame generating modules generate a data frame respectively based on the output of the STBC unit, a plurality of preamble codes generated by a preamble code spreading unit, a pilot code and a cyclic prefix. The data frame is sent to the receiver via a plurality of transmitting antennas.