Multichannel radio receiver and transmitter of reusing analog baseband unit

Abstract

The invention discloses a multichannel radio receiver and transmitter of reusing an analog baseband unit. The characteristic that the bandwidth of the analog baseband unit in the radio receiver and transmitter is much larger than that of a radio frequency unit is utilized. The combination (or degeneration) reuse of analog baseband units is achieved by either or both of the following two modes that before entering the reuse analog baseband unit, signals in each channel are subjected to frequency conversion and moved to different frequency bands respectively, and then the signals are gathered to form a path of broadband signals entering the reuse analog baseband unit; or before signals in each channel enter the reuse analog baseband unit, for different channel selection, a high speed switch is utilized to enable the reuse analog baseband unit to process signals in different channels during different time slots. By either or both of the abovementioned two modes, analog baseband units of channels with wide bandwidths are subjected to combination (or degeneration) reuse to form the reuse analog baseband unit, so that the total area of the chip of the multichannel radio transceiver is reduced.

Description

technical field [0001] The invention relates to a radio signal receiver and transmitter, in particular to a multi-channel radio receiver and transmitter with multiplexing analog baseband units. Background technique [0002] Multiple Input Multiple Output technology (MIMO: Multiple Input–Multiple Output) is widely used in advanced communication systems to form a multi-antenna, multi-channel MIMO system. The MIMO system uses multiple antennas at the transmitting end or receiving end with the help of multiple antennas, and each antenna corresponds to a channel. [0003] Compared with the previous single-antenna system, the MIMO system can increase the amount of information transmission by approximately the multiple of the number of antennas without increasing the bandwidth of the carrier signal (Li Zailin. Research on MIMO-OFDM synchronization technology in 4G communication systems [D]. Nanjing: Nanjing University of Science and Technology, 2011:1-8, reference 1). [0004] ...

AI Technical Summary

Problems solved by technology

As the number of channels increases, the number of analog baseband units required by the transceiver also increases rapidly, and the chip area occupied by the analog baseband unit is larger, so the chip area also increases accordingly, resulting in a double increase in chip manufacturing costs

Therefore, the chip area greatly restricts the number of channels of the transceiver

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