2x2 multiple input/multiple output (MIMO) wireless system for IEEE 802.11 networksBCM4321—PCI/PCI Express®/CardBus IEEE 802.11a/g/pre11n MAC/BB controllerBCM2055—2x2 MIMO radioAll CMOS implementation of the world's most advanced MIMO system architecture for IEEE 802.11 networksFull interoperability between IEEE 802.11a/g legacy devices and high-speed MIMO modesAllows cost-effective system design using low-cost PCB and single-sided assemblyTwo transmitters and two receivers allow data rates supporting >100 Mbps real-world throughput using highspeed spatial multiplexing modesIncreased rate/range provides user satisfaction and reduces product support call volumeSelf-calibrating architecture allows high-yield board manufacturing2x2 antenna structure maintains form factor compatibility with high-volume IEEE 802.11a/g industrial designsDesigns meet Pb-free/RoHS worldwide requirements
The BCM4321 supports the following MCS Index and MIMO operational modes:
- MCS 0-15 for 20MHz signaling
- Legacy 11g mode (Cyclic Delay Diversity)
- Legacy 11a mode (Cyclic Delay Diversity)
- MCS 0-15, 32 for 40MHz signaling
- Cyclic Delay Diversity and Spatial Division Multiplexing modes.
- The following PHY operational modes are supported: Legacy Mode, HT Mode, Duplicate
Legacy Mode, 40MHz Upper Mode, 40MHz Lower Mode
- Only 800ns Guard Interval is supported. The 400ns Short Guard interval is not supported.
WLAN Specifications
Power Consumption: 3.3Vdc @ 600mA
Environmental:
Operating Temperature: 0 to 70*C
Relative Humidity: 10 to 90% (non-condensing)
Physical:
Height: 4.5mm
Width x Depth: 58mm x 20mm
Weight: 0.010Kg
Transmission/Reception Frequencies:
Channels 1-13 (20MHz), 3-11 (40MHz): 2400 – 2472MHz
Channels 36, 40, 44 & 48 (20MHz),38 & 46 (40MHz): 5150 – 5250MHz
Channels 52, 56, 60 & 64 (20MHz),54 & 62 (40MHz): 5250 – 5350MHz
Channels 104, 108, 112, 116, 120, 124, 128,132, 136 & 140 (20MHz),120, 110, 118, 126 & 134 (40MHz): 5470 - 5725MHz
Channels 149, 153, 157, 161, 165 (20MHz),151 & 159 (40MHz): 5725 – 5850MHz
Operational Modes: As per 802.11ag/Draft 802.11n
Data Transmission Rates 802.11b:
11 and 5.5 Mbit/s: 8-chip complementary code keying (CCK)
2 Mbit/s: 11-chip differential quadrature phase shift keying (DQPSK)
1 Mbit/s: 11-chip differential binary phase shift keying (DBPSK)
Data Transmission Rates 802.11a/g: Orthogonal Frequency Division Multiplexing(OFDM)
54,48,36,24,18,12,9 & 6Mbits/s
Draft 802.11n Transmission Rates (Single Stream):
20 MHz BW: 65 ,58.5, 52, 39, 26,19.5, 13, 6.5: MCS 0-7 (Cyclic Delay Diversity – CDD)
40 MHz BW: 135,121.5 108, 81, 54, 40.5, 27,13.0, 6,: MCS 32 (Duplicate Mode 6.0Mbps– 40MHz only)
Draft 802.11n Transmission Rates (MIMO 2x2):
20 MHz BW: 130, 117, 104, 78, 52, 39, 26, 13 :MCS 8-15 (Spatial Division Multiplexing–SDM)
40 MHz BW: 270, 243, 216, 162, 108, 81, 54, 27
Antenna (highest gain):
Type: PCB antenna
Maximum Gain (2.4GHz):3.36dBi
Maximum Gain (5GHz): 6.23dBi (5150-5350MHz),6.02dBi (5470-5850MHz)
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