Reconfigurable Signal Processing and DSP Hardware Generator for 5G Transmitters

Abstract

To impose the reconfigurability and reusability of digital circuits for millimeterwave transmitter architectures, high-speed digital signal processing architectures are explored. The digital front-end of these next-generation transmitters can be implemented up to the maximum operating frequency to meet the requirements of the 5G NR FR2 frequency bands. This paper presents an efficient implementation of a reconfigurable digital signal processor (DSP) that contains programmable multistage multirate filters, operable up to 4 GHz, and a flexible generator for polar, outphasing, and multilevel outphasing modulation. The system achieves an excellent ACLR of 42 dB and EVM degradation of 1.61% with a 7-bit phase signal at a sampling frequency of 4 GHz for outphasing modulation. Digital synthesis of the circuit in a 22 nm FDSOI process results in a core area of 0.12 mm 2 and an estimated power consumption of 142 mW for a 200 MHz bandwidth 5G NR baseband signal.

Reconfigurable Signal Processing and DSP Hardware Generator for 5G and Beyond Transmitters

“…It can be seen that the area consumption for the multimodulation DSP processor synthesized toward the 5-nm technology node in this work has decreased by about 90.96% compared with our previous work [46], where a similar and comparable hardware operating at similar speeds is synthesized toward a 22-nm CMOS process. The hardware in 5 nm also consumes about 73% less power than the implementation in 22 nm.…”

“…The generated hardware for multimodulation DSP achieves an EVM of 0.78% and an ACLR of −48 dB for multilevel outphasing modulation with a 200-MHz 5G NR BB signal. The proposed hardware for multimodulation consumes about 73% less power than our previous implementation [46] synthesized at the 22-nm technology node at an output sampling rate of 4 GHz. The proposed hardware generator is not only a generator for multiple transmitter architectures but also can be configured to have multimodulation output with an output sampling rate of up to 128 compared with the BB frequency.…”

“…The normalized BB signal corresponding to the 5G NR communication standards was generated using the BB signal generator. To feed the normalized in-phase (I ) and quadrature signal (Q) into the hardware as 16-bit input signals, we scale the input data to fit a signed fractional Q format [45]db@TI , as mentioned in our earlier work [46]. Fig.…”

Hardware software SoC co‐design analysis and implementation of MIMO‐OFDM for 4G/5G/6G eNodeB applications

“…An improvement in spectrum use is provided by, which permits the use of single frequency networks. [31][32][33][34][35][36][37][38][39][40][41][42]76 Similar to OFDM, OFDMA transmits a large number of subcarriers as distant subchannels that are closely spaced apart. Depending on the application data rate and channel conditions, the transmitter receives subchannels during the uplink process.…”

“…A MIMO system has many antennas at the transmitter and receiver, as seen in Figure 6. The following [31][32][33][34][35][36][37][38][39][40][41][42][43][44][45]76,77 lists the numerous antenna configuration combinations used in communication systems. A pre-coder algorithmic approach is used in MIMO at the transmitter.…”