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| 供应商 | Noesis Technologies |
|---|---|
| 型号 | OFDM Baseband Processor |
| 类型 | Soft IP |
| 到期日 | Silicon proven |
| 源网址 | View more |
| 特征 | Customized transmit and receive physical layer chains. Fully synchronous design enabling high throughput TDD operation. BLPB and SLPB processing blocks. Implements a sophisticated synchronization algorithm to efficiently detect and isolate received modulated payload information. Configurable as either downlink (DL) baseband station or uplink (UL) baseband station. Configurable data randomization, modulation level and code rate. Host interface based on SPI protocol. RF interfacing supporting Analog Devices AD9361 RF Transceiver. Configurable dynamic range scaling (1x, 2x or 4x) providing robust operation in channels with lower SNR value. Fully synchronous design, Silicon proven in FPGA technologies. |
| 详情页 | View more |
| 附件名称 | ntOFDM_BBP_pb.pdf |
| 附件链接 | View more |
Noesis Technologies ntOFDM_BBP is a custom baseband processor, which implements the physical layer of an OFDM, time division duplexing (TDD) system. The baseband processor includes both transmission and reception bit-level and symbol-level processing chains including a sophisticated synchronization unit. The host interface is based on SPI protocol as well as with handshaking/interrupt ports. This custom system implements a subset of 802.16d standard functional options/features and is highly configurable via the integrated register file. An RF interface module is also included, compatible with Analog Devices AD9361 RF transceiver.
The Bit-level processing block (BLPB) transmission chain implements the following functional units : randomization, FEC encoding, interleaving and symbol mapping. In BLPB reception chain the following operations are implemented: soft symbol demapping, deinterleaving, FEC decoding and derandomization. The FEC module is based on the implementation of the Reed Solomon algorithm.
The Symbol-level processing block (SLPB) transmission chain implements the following functional units: OFDM symbol transmitter, IFFT , CP insertion. In reception chain the SLPB module is preceded by the synchronization unit, which is searching for known preamble values in order to locate the start an incoming wimax sub-frame. Once the sub-frame is located, frequency offset compensation is applied and received information is propagated down to SLPB reception chain. In SLPB reception chain the following operations take place: CP removal, FFT, OFDM symbol receiver, channel estimation, phase offset compensation and channel equalization.
For more information please view our demo video at:
http://noesis-tech.com/downloads/ntOFDM_HS_BBP/OFDM_Demo.mp4
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