A 70Mb/s −100.5dBm sensitivity 65nm LP MIMO chipset for WiMAX portable router

In this paper, we present a low-power high-performance WiMAX chipset fully compliant with IEEE 802.16e specification corrigendum 1, 2 for mobile broadband access and WiMAX Forum System Profile Wave2. The chipset is comprised of a 632.7mW modem/router chip and a 364mW RF transceiver chip, both developed in 65nm CMOS. In [1], a fully programmable SIMD processor is used for WiMAX baseband and only parts of physical-layer functions are implemented; the FEC processor, media access control (MAC) processor, application processor, peripherals, etc. are excluded. Compared to hard-wired ASIC design, the use of a SIMD processor may cause higher power consumption and larger area if exactly the same functionality and algorithm are implemented. The baseband of our chipset is realized by HW accelerators and controlled by a simple DSP to minimize area and power. The modem/router chip also includes an analog fron-tend (AFE), MAC, memory controller, application processor, and interfaces such as PCM, PCI, USB 2.0 and fast Ethernet to provide rich and highly integrated CPE applications for portable router, VoIP phone, printer server, storage server, NAS, etc.