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Low-Power Baseband Processors for Communications
Published in Christian Piguet, Low-Power Processors and Systems on Chips, 2018
A baseband DSP processor is an application specific processor dedicated for baseband signal processing. Requirements on a baseband processor vary a lot according to differences in dynamic range, channel fading, bandwidth, and applications (voice or data). Low-power design is essential in baseband processors for radio terminals. In addition to conventional low-power design rules, low-power design for baseband processors especially focuses on optimizing task level partitioning, scheduling, and parallelization. Minimizing memory size and memory accesses is essential. Functional acceleration is the key factor to achieve the balance between low-power consumption and flexibility. Variable precision, operand-stopping, and clock-gating techniques are also important ways of achieving low power.
Connected Devices
Published in Saad Z. Asif, 5G Mobile Communications Concepts and Technologies, 2018
A baseband processor manages all the radio functions (signal modulation, encoding, radio frequency shifting, etc.). A baseband processor consists of two parts, namely a modem to modulate and demodulate the radio signal and a protocol stack unit. The protocol stack unit handles the communication between base station and mobile terminal by establishing connections, managing radio resources, handling errors, and packetizing incoming and outgoing data [27].
Cost-Optimized Energy-efficient Power Amplifier for TD-LTE Outdoor Pico Base Station
Published in IETE Journal of Research, 2022
Brijesh Shah, Gaurav Dalwadi, Hardip Shah, Nikhil Kothari
M.H. Alsharif et al. illustrated the energy consumed by different elements of a mobile cellular network such as mobile switching center (MSC), data center, core network, base station (BS) and other elements in their work [2]. It can be seen that 57% of the overall energy consumption of mobile network is contributed by BS. Therefore, the power optimized BS is essential for cellular networks. M.H. Alsharif et al. also depicted the energy consumption break-up of internal components of a macro BS in their work [2]. Baseband processor (BBP), radio frequency (RF) chains, main power supply, DC–DC converters and cooling are the key internal elements of macro BS. Power amplifier (PA) is the main power hungry device among all the components in a macro BS with ∼57% of the overall power consumption [2]. Although the exact break-up of the power consumption may vary to a certain extent in comparison with macro BS, the power consumption of PA in outdoor pico BS shows the similar trend. Therefore, the power efficient design of PA for outdoor pico BS becomes one of the important requirements for the LTE access network.