Radio Frequency Integrated Circuit Design for Cognitive Radio Systems (eBook)

Amr Fahim is associated with the Semtech Corporation in Newport Beach, California.

Preface 6
Contents 7
About the Author 10
Chapter-1 11
Introduction 11
1.1 What Is Cognitive Radio? 11
1.2 Brief History of Cognitive Radio 13
References 15
Chapter-2 16
Cognitive Radio Primer 16
2.1 Wireless Communication Technologies 16
2.1.1 Wireless Connectivity Networks 16
2.1.2 Wireless Channel Impairments 18
2.1.3 OFDM Primer 21
2.2 Cognitive Radio Systems 23
2.3 Spectrum Management Techniques 24
2.4 Spectrum Sensing 26
2.5 Signal Detection in Cognitive Radios 29
2.6 Cognitive Radio Standardization 31
2.6.1 IEEE 802.22 and TVWS Technology 31
2.6.2 TVWS Deployments 35
Summary 37
References 37
Chapter-3 40
Wideband Receiver Design 40
3.1 Receiver Metrics 40
3.2 Receiver Gain Control 44
3.3 Wideband LNA Design 45
3.3.1 Wideband Circuit Topologies 49
3.3.2 LNA Gain Control 54
3.3.3 Comparison and Summary 57
3.4 RF Tracking Filter 57
3.4.1 High-Q Tunable Passive Discrete Filters 59
3.4.2 On-Chip Active Tunable RF Filters 61
3.4.3 Wideband Passive Sampled Filters 64
3.4.4 Wideband Active Sampled Filters 68
3.4.5 Wideband Complex Sampled Filters 74
3.4.6 Comparison and Summary 77
3.5 Downconversion Mixers 79
3.5.1 Image Reject Mixer 79
3.5.2 Harmonic Reject Mixer 81
Summary 81
References 84
Chapter-4 88
Wideband Spectrum Sensing Techniques 88
4.1 Requirements and Challenges 88
4.2 Spectrum Sensing Techniques 90
4.2.1 Energy-Based Sensing 92
4.2.2 Feature-Based Sensing 94
4.2.3 Second-Order Statistics-Based Sensing 97
4.2.4 Summary and Comparison 99
4.3 Energy-Efficient Spectrum Sensing Techniques 100
4.3.1 Adaptive Two-Step Sensing Technique 101
4.3.2 Cooperative Spectrum Sensing Techniques 101
Summary 105
References 105
Chapter-5 107
High-Linearity Wideband Transmitter 107
5.1 Requirements 107
5.2 Direct UpconversionTransmitter 110
5.3 Cartesian Loop Transmitter 112
5.4 Polar Modulator Transmitter 113
5.5 Direct Digital Upconverter Transmitter 118
5.6 RF Digital-to-Analog Converter 122
5.6.1 DC Matching Requirements 123
5.6.2 Transient Effect and Glitches 128
5.6.3 Sampling Effects in DACs 129
5.7 Digital Predistortion in RF Transmitters 130
5.8 High-Linearity and High-Efficiency PAs 135
Summary 143
References 144
Chapter-6 147
Wideband Phase-Locked-Loop-Based Frequency Synthesis 147
6.1 Jitter and Phase Noise Primer 147
6.2 Requirements 150
6.3 Phase-Locked Loops (PLL) Primer 152
6.3.1 Integer PLL 152
6.3.2 ?? Fractional-N PLL 155
6.4 PLL Phase Noise Optimization 162
6.5 Charge Pump Circuit Implementation 165
6.6 Voltage-Controlled Oscillator Implementation 172
6.6.1 VCO Phase Noise Theory 172
6.6.2 Cyclostationary Analysis of VCO Phase Noise 177
6.6.3 LC VCO Design 180
Summary 193
References 193
Index 195