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Published byJoy Pope Modified over 9 years ago
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Wireless Communication System … for >
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Basic System Design Describe some key features of your system...
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Duplex method How do you separate signals in up and downlink? Time Division Duplex Frequency Division Duplex –frequency separation
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Frequency reuse / etiquette Cellular or non-cellular? –Cell sizes? Cluster size, …. Centralised frequency assignment, decentralised, random access,..
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The uplink Full in those parameters that you deem relevant for discussion User bit rate: xyz kbit/s Channel symbol rate: Transmit bandwidth: Frequency band: Modulation method (OFDM, DS-CDMA) –parameters: FFT size, spreading factor, Multi-user detection? Multiple access method Diversity method –none / antenna / time / frequency: which spacing? Transmit power
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The downlink User bit rate: xyz kbit/s Channel symbol rate: Transmit bandwidth: Frequency band: Modulation method (OFDM, DS-CDMA) –parameters: FFT size, spreading factor, rake size Diversity method –none / antenna / time / frequency: which spacing? Transmit power
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Technologies Mention specific components of the system, for instance FFT for OFDM, rake for CDMA Do you need a linear power amplifier?
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Data format Fill in (only) if you have had time to think about it # of user bits per packet # of overhead bits per packet –addressing –synchronization –CRC error corrections guard times
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