Title :
A MIMO WiMAX SoC in 90nm CMOS for 300km/h mobility
Author :
Chuang, Gene C H ; Ting, Pang-An ; Hsu, Jen-Yuan ; Lai, Jiun-You ; Lo, Shun-Chang ; Hsiao, Ying-Chuan ; Chiueh, Tzi-Dar
Author_Institution :
ITRI, Hsinchu, Taiwan
Abstract :
In this paper, we present a WiMAX baseband SoC implemented in 90nm and capable of high-speed transmission at 300km/h. This SoC is integrated in a USB device that also includes an RF transceiver for MIMO WiMAX transmission. The baseband transmitter generates a WiMAX waveform according to the IEEE 802.16e Rev2 specification. In this time-division duplex WiMAX system, the uplink subframe is composed of OFDM symbols of 10MHz bandwidth, which are aggregated by 173 guard, 83 pilot, and 768 data subcarriers. The MAC, using an ARM926 processor, arranges the data and control packets in a Protocol Data Unit (PDU) format, and feeds these packets to the baseband transmitter. Finally, the 50MHz clocked 10b DACs convey baseband I and Q signals to the RF transceiver chip.
Keywords :
CMOS integrated circuits; MIMO communication; WiMax; digital-analogue conversion; radio transceivers; system-on-chip; time division multiplexing; ARM926 processor; CMOS process; IEEE 802.16e Rev2 specification; MIMO WiMAX SoC; OFDM symbols; RF transceiver chip; digital-to-analogue converters; protocol data unit; size 90 nm; system-on-chip; time-division duplex; Baseband; Channel estimation; Decoding; MIMO; Matrix decomposition; Radio frequency; WiMAX;
Conference_Titel :
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2011 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-61284-303-2
DOI :
10.1109/ISSCC.2011.5746252
