CPM Modem for
low and medium capacity applications (bc001).
Adaptive
modem from 4-QAM to 1024-QAM for channel spacing up to
250 MHz (bc011, "E-band").
Multi-standard
Analog TV Modulator (bc008).
Adaptive
non-linear pre-distortion for application to OFDM transmission (bc009).
Adaptive
linear pre-correction for application to OFDM transmission (bc010).
The Binary Core bc001 Modem is a CPM modulator/demodulator for
data transmission over point-to-point microwave radio links. The
bc001 modem is designed for highly non-linear transmitters, and
has excellent robustness against phase noise and other channel
impairments. Optimized for low-cost devices, bc001 achieves
extremely low power consumption.
- 10/100/1000 Ethernet interface.
- Net bit rate 33.94 Mb/s, in 28 MHz channel spacing.
- CPM modulation with GMSK shaping.
- Bandwidth agility (3.5/7/14/28 MHz channel spacing).
- Coherent/Non-Coherent Parallel demodulator with automatic (or manual) selection.
- Channel encoding based on BCH(255,239) code that substantially improves system gain at the cost of moderate bandwidth expansion.
- Adaptive fractionally-spaced equalizer to face selective fading and adjacent channel interference.
- Only one external clock source required, with maximum frequency 100 MHz.
- ADC and DAC frequency 80 MHz, for 28 MHz channel spacing.
- Receiver impairments recovery (I/Q amplitude and phase unbalance).
- Timing recovery with digital re-sampling.
- Automatic carrier frequency recovery for fast carrier acquisition.
The Binary Core coded modulation scheme bc005 ("Manero") is extremely compact, highly modular, and it supports all square and cross modulation formats from 4- up to 1024-QAM. The modem is well suited for implementation on microwave point-to-point digital radio links and it is compliant with the ETSI EN 302 217-2-2 standard requirements. Typical channel spacings are 3.5-7-14-28-56 MHz (if implemented on low cost FPGAs) and up to 112 MHz (if implemented on high performance FPGAs).
The system can be enhanced with asynchronous Cross-Polar Intereference Canceler (XPIC) and/or diversity Combiner.
- Eight modulation formats (4-, 16-, 32-, 64-, 128-, 256-, 512-, and 1024-QAM).
- Adaptive modulation switching based on channel measurement and internal service channel signaling.
- Byte interface compatible with both asynchronous and synchronous data flow.
- Finely tuneable symbol frequency.
- Only one external clock source required, feeding FPGA, DAC, and ADC.
- Polynomial predistortion.
- TX and RX I/Q impairments recovery (amplitude and phase unbalance).
- Timing recovery with digital re-sampling.
- Carrier recovery with pilot symbols for improved robustness to phase noise.
- Automatic frequency recovery for fast carrier acquisition.
- 20-tap adaptive fractionally spaced equalizer.
- Efficient coding scheme based on punctured convolutional code with mapping by set partitioning, and
concatenated Reed-Solomon code.
- Very high reconfigurability (convolutional code rate, Reed-Solomon code rate, interleaver depth, pilot symbol rate).
- User definable service channel for closed-loop communication between transceivers.
- Optional asynchronous XPIC and Combiner.
The Binary Core modulation scheme bc010, "E-Band", is specifically designed to operate in 250 MHz channel spacing for E-Band applications. All square and cross modulation formats from 4- up to 1024-QAM are supported. A finely tuneable coding scheme allows to optimize the trade-off between throughput and error performance.
- Eight modulation formats (4-, 16-, 32-, 64-, 128-, 256-, 512-, and 1024-QAM).
- Up to 2 Gbit throughput in 250 MHz channel spacing.
- Adaptive modulation switching based on channel measurement and internal service channel signalling.
- Latency independent of the modulation format.
- Byte interface compatible with both asynchronous and synchronous data flow.
- Finely tuneable symbol frequency.
- Only one external clock source required for the FPGA, with frequency in the range 225-250 MHz.
- Polynomial predistortion.
- TX and RX I/Q impairments recovery (amplitude and phase unbalance).
- Timing recovery with digital re-sampling.
- Carrier recovery with pilot symbols for improved robustness to phase noise.
- Automatic frequency recovery for fast carrier acquisition.
- 20-tap adaptive fractionally spaced equalizer.
- Finely tuneable multilevel coding scheme based on inner punctured convolutional and BCH codes, and concatenated Reed-Solomon code, with mapping by set partitioning.
The Binary Core DVB-T2 modulator bc006 - compliant with ETSI TR 302 755 V1.1.1 standard - is already available for different FPGA supports. Furthermore, it is area-efficient and modular, thus making tailoring to your specific requirements straightforward. MFN mode with Transport Stream input can be used in the stand-alone version. SFN mode with T2-MI input is supported if Binary Core bc006 core is used along with an external DVB-T2 gateway (also available from Binary Core on request).
- FFT sizes: 1K, 2K, 4K, 8K, 8K extended, 16K, 16K extended, 32K, 32K extended.
- Guard-interval fractions: 1/128, 1/32, 1/16, 19/256, 1/8, 19/128, 1/4. Guard interval processing may need an external memory depending on the amount of memory available on your FPGA.
- Scattered-pilot patterns: 8 different versions (PP1... PP8) matched to guard intervals.
- Continual pilots with improved optimization to reduce overhead, with respect to DVB-T.
- Supported code rates: 1/2, 3/5, 2/3, 3/4, 4/5 and 5/6 with normal and short FECFRAME.
- Supported modulation format: QPSK, 16-QAM, 64-QAM and 256-QAM.
- Rotated constellations, which provide a form of modulation diversity, to assist in the reception of higher-code-rate signals in adverse channel condition.
- Extended interleaving, including bit, cell, time and frequency interleavers. The time interleaver requires external memory.
- Frame structure with special (short) identification symbol, for rapid channel scanning, signal acquisition, and frame-structure parameters transmission.
- Multiple Input Single Output (MISO) using the Alamouti technique.
- T2-MI interface included.
- Single Frequency Network (SFN) transmission mode supported with T2-MI stream generated by external DVB-T2 Gateway (by Binary Core or third party). This feature needs an external memory.
- Multi-PLP support with T2-MI stream generated by external DVB-T2 Gateway.
- Bandwidth agility 1.7 MHz, 5 MHz, 6 MHz, 7 MHz, 8 MHz, or 10 MHz.
The Binary Core DVB-T2 gateway bc007 is compliant with ETSI TR 302 755 V1.1.1 standard. It can be used to feed multiple DVB-T2 modulator, from Binary Core (bc006) or from third party producers.
- Up to 8 PLP inputs.
- Baseband data frames creation.
- L1 signalling frames creation.
- STS frames insertion to allow SFN synchronization.
- Input stream synchronization.
- Null packet deletion.
- CRC-8 encoding.
- T2-MI stream generation (encapsulated in MPEG2 Transport Stream).
The Binary Core bc008 is a multi-standard digital implementation of the analog TV modulator. The core is compliant with the most common analog TV standard. It is highly configurable and can be easily integrated in your system.
- Compatible with PAL (B, G, H, I, M, N), SECAM (B, G, H, D, K, K1, L), and NTSC (M) standards.
- 4:2:2 10 bit parallel input (D1 format - ITU-R656).
- System clock derived from video input.
- Fully configurable luminance and chrominance levels.
- Selectable video low pass filter stop bandwidth (4.5, 5.0, 6.0, 6.5 MHz).
- Selectable vestigial side band filter stop bandwidth (-0.75, -1.25 MHz).
- Selectable video group delay pre-correction (Curve A, Curve B, M system Curve, DK system Curve, Flat).
- 2-channel audio input (20 Hz to 15 kHz bandwidth), 16 bits per channel @48 KHz sampling frequency. I2S input format. Single 90 kHz bandwidth channel @200 KHz sampling frequency in also supported (BTSC standard).
- Selectable FM or AM audio modulation.
- Audio sub-carrier: selectable frequency (4.5, 5.5, 6.0, 6.5 MHz) and adjustable level.
- Selectable audio pre-emphasis filter (50 µs, 75 µs, flat).
- Selectable audio subcarrier deviation (FM mode).
- Audio mode: mono, stereo and dual sound selectable, according to IRT standard.
- 16-tap linear pre-correction filter.
- AM-AM/AM-PM non-linear pre-distortion (512 points).
- I/Q baseband or IF (with selectable modulation frequency) 16 bit parallel output.
- Output clock asynchronous with input clock.
The Binary Core Adaptive non-linear pre-distortion core bc008 corrects the time-varying non-linear characteristics of the power amplifier, by means of a polynomial correction. The core thus reduces out-of-band spectral emissions and in-band non-linear noise, by controlling 3rd and 5th order distortion.
- Suitable for digital modulation (QAM, OFDM).
- 3rd and 5th order distortion correction.
- Iterative Minimum Mean Square Error algorithm.
- Complex 3rd and 5th order coefficient estimation and real-time application.
- Iterative Minimum Mean Square Error algorithm.
- Selectable iterative algorithm convergence speed.
- Automatic timing recovery on feedback signal.
- Automatic phase recovery on feedback signal.
- Automatic forward power control.
- Approximately 4500 logic elements.
- Approximately 65 18x18 multipliers.
The Binary Core adaptive linear pre-correction core bc010 is a 128-tap digital filter used to automatically compensate in-band linear amplitude and phase/group delay characteristics introduced by analog output filters.
- Suitable for digital modulation (QAM, OFDM).
- 128 complex taps digital estimation.
- Linear amplitude compensation.
- Linear phase/group delay compensation.
- Iterative Minimum Mean Square Error algorithm.
- Optional 128 complex taps linear filter.
- Selectable iterative algorithm convergence speed.
- Automatic forward power control.
- Approximately 4600 logic elements.
- Approximately 55 18x18 multipliers.
