Multiple Modulation Transmitter/Receiver Arrangements TRIZ Cases

Delay-Doppler OTFS mapping spreads data across time and frequency resources to improve bandwidth use, lower PAPR, and cut packet errors.

Unused communication radio resources carry dummy signals that let a base station power and charge terminal apparatuses without separate wiring.

Delay-Doppler OTFS mapping improves wireless link reliability while lowering PAPR and transmission overhead under bandwidth limits.

A unified interleaver handles RUs with different modulation schemes, simplifying hardware while improving channel capacity and mapping efficiency.

By spreading encoded bits across multiple symbols, this case cuts interleaving complexity while improving fading tolerance and error-rate performance.

Encoded bits are mapped so adjacent code data avoid the same symbol, improving fading resistance with symbol interleaving and lower complexity.

Iterative sampling frequency conversion and reliability checks improve signal specification identification when unknown band-limiting filters distort rate estimation.

Delay-path calibration generates orthogonal I/Q signals without a synthesizer or divide-by-2, cutting mixer power use and die area.

Mapping encoded bits across different symbols plus symbol interleaving suppresses fading errors while avoiding full bit-interleaving complexity.

Encoded data is spread across different symbols to resist fading burst errors and improve reception without complex bit interleaving.

Thresholded pre-cancellation removes only large PAPR peaks, extending ADC dynamic range while limiting DAC noise and complexity.

Dynamic channelization and FIR-based downsampling extract only needed RF bands, easing full-bandwidth processing overload.

Mode-specific coefficient mixing lets one baseband platform handle 5G protocols with lower power use and less hardware specialization.

Threshold-based DAC cancellation suppresses high-PAPR peaks so ADCs preserve dynamic range and reduce noise in full duplex RF reception.

Encoded bits are distributed across multiple symbols to curb fading-driven error degradation while avoiding the complexity of conventional bit interleaving.

Switching one phase shifter between voltage and current modes improves phase accuracy in test operation while lowering transmitted noise in normal use.

Two NRZ optical channels are combined with SOA and PSR to generate high-quality PAM4 while avoiding strict electrical linearity.

Adaptive non-uniform constellation mapping improves capacity and lowers bit error rates at reduced SNR by matching code rate and channel conditions.

Dynamic reference points from scrambled symbol numbers simplify QAM and PSK soft demodulation without large correspondence tables.

TM inserts an extra data channel into a carrier so multiple signals share one frequency without disrupting traditional receivers.

Delta-sigma impedance switching lets passive RFID tags backscatter filtered QAM, OFDM, and other arbitrary signals with fewer spectral collisions.

Switching one mixer between voltage and current modes preserves phase accuracy in test mode while cutting transmitted noise and silicon area.

A phase-pulse modulation approach generates single-sideband carrier signals directly, cutting spectral width and interference without post-filtering.

Two NRZ optical signals are multiplexed to form PAM4, easing electrical linearity demands while improving signal quality and device compatibility.

By varying antenna impedance with delta-sigma modulation, RFID tags can backscatter QAM, OFDM, and other signals with fewer spectrum collisions.

Reference-point mapping by symbol number simplifies scrambled QAM demodulation, cutting memory use and soft-decision decoding complexity.

Bit-specific constellation remapping simplifies high-order MIMO demodulation, cutting processing overhead while preserving channel estimation accuracy.

Envelope tracking and Fs/4 modulation extend Class D amplifier bandwidth beyond AM limits while preserving high RF power efficiency.

Power supply modulation cancels post-stage amplifier phase error in a ΔΣ transmitter, preserving signal quality without complex predistortion.

A coded modulation indicator in a default-modulated preamble lets receivers switch modulation, extending range without sacrificing throughput.

Encoded bits are spread across different symbols to suppress fading-driven error-rate loss while keeping interleaving complexity low.

Adaptive 10GBASE-T framing uses training, symbol-rate selection, and Reed-Solomon protection to match link quality without unnecessary speed drops.

A CAREX and heterodyne approach recovers a carrier from suppressed or mixed modulation, letting TM and conventional signals share bandwidth.

Variable tap order and adaptive gain help radio receivers suppress narrowband jamming and multipath while limiting bit errors.

A hybrid CPU-FPGA-GPU SDR architecture splits serial and parallel workloads to demodulate multiple channels in real time.

Selective delay and pulse-width control let saturated amplifiers transmit M-ary signals with lower power use and less spurious filtering.

A 40 Gbaud transponder switches between DP-16QAM and trellis-coded 16QAM to deliver flexible 400G or 1T transoceanic links.

Recovers carrier frequency from modulated signals with little prior information, enabling mixed modulation on one carrier without interference.

Signal decomposition with delta-sigma and pulse-width modulation cuts quantization noise and helps RF transmitters meet ACLR limits.

A reference carrier is regenerated from center-frequency differences to recover suppressed carriers and separate TM and traditional signals.

An FPGA handles real-time serial channel processing while a GPU accelerates parallel SDR algorithms for flexible modulation and demodulation.

Time-domain envelope shaping plus frequency-domain quality control lowers OFDM PAPR in ET power amplifiers without degrading linearity.

Dynamic filter, gain, and demodulation adjustment counters WiFi, Bluetooth, and WiMAX interference to protect SNR and RF front-end linearity.

A feedback-based CAREX circuit recovers suppressed carriers from modulated signals and separates TM signals on a shared carrier.

A PCS-guided slicer and decision based filter decode mixed-modulation symbols in one frame, reducing demodulation errors and error propagation.

Different modulation types across OFDM subcarriers encode extra bit information, improving bandwidth use, SNR, and data rate.

PCS feedback selects the right slicer output for mixed-modulation symbols, reducing DBF error propagation and improving receiver reliability.

Amplitude decomposition and delta-sigma modulation cut quantization noise in RF pulse generation, improving ACLR compliance in transmitters.

Dynamic switching among stored spiral modulation sets lets software-defined radios adapt to channel conditions while reducing hardware load and power use.

Encoded bits are distributed across symbols and antennas to suppress fading-related error rate loss with lower interleaving complexity.

Programmable Golay-code matched filtering improves piconet identification while reducing multi-user interference and preserving synchronization.

Phase-rotated filtering and equalization suppress GMSK interference from 8PSK or other mixed-modulation baseband signals.

Layering signals summed with a carrier create phase-shifted waveforms that raise data throughput while reducing signal degradation.

User equipment dynamically selects between DFT-S-OFDM and CP-OFDM waveforms for RACH procedures based on measured path loss, resolving adaptability trade-offs.

Flexible mapping of adjacent differential data units maintains channel estimation accuracy despite time and frequency offsets.

A wireless communication system selects interleaver parameters based on dual sub-carrier modulation modes to optimize data transmission.